[astro][tee] Enable OP-TEE for Astro

In order to communicate with the OP-TEE OS on Astro, the Astro board
driver must add the OP-TEE device to the platform bus. This change
enables the OP-TEE device and allows it to map the Secure OS memory
region. This memory region is used for communication between the secure
world and the non-secure world.

Test: Manual testing on Astro to ensure device was initialized.
Change-Id: I6c2e6f05c9579a9999df1056ec3215a4f9ab9406

[gpio] Refactor the GPIO protocol

This is a first step in a move toward using protocols to represent
individual resources. A similar change will be made to the I2C protocol
to bring it in line with how I2C is used on x86 platforms.

From the client's point of view, an instance of the ZX_PROTOCOL_GPIO
protocol now represents a single pin. The protocol remains the same,
except the "uint32_t index" has been removed from all the protocol functions.

For devices that have only one GPIO resource assigned to them, the driver
can simply call device_get_protocol() to access the GPIO protocol for the pin.
To for devices with more than one GPIO pins, a new API in the platform bus called
pdev_get_protocol() must be used instead.

In addition, we add a new protocol ZX_PROTOCOL_GPIO_IMPL, which is now
implemented by the GPIO drivers. This protocol is essentially the same as
the old GPIO protocol, except "index" has been renamed "pin".
Board drivers may use this protocol directly when doing low level system
configuration, specifying pin numbers directly.

TEST: Booted on VIM2 and Hikey.
On VIM2, USB, display, ethernet and the GPIO test driver are working properly
On Hikey, the system boots and USB is functional.

Change-Id: I44f1bc11ad9793543361a2d19d7a2de4458c334b

[astro][audio] Astro audio input driver

TEST: tested on Astro hardware
Change-Id: I220e2272c3cbcce11e4e0efd38446352763979b9

[astro][audio] tdm output driver

TEST: tested on astro hardware with /boot/bin/audio tool

Change-Id: Ic98d52ee260cd06b101fde310affa7d3a266cc68

[astro][board][display] Use the new board info to get revision

Test: booted on two version of EVT

Change-Id: Ic64abb62712de4411de9c00d73d5a5e375ceb1e1

[amlogic][cpu-freq] Add CPU Freq. Scaling support

- Added support for configuring the dynamic mux
to generate frequencies less than 1GHz using MPLL.
- Cleanup and bug fixes in HIU PLL library.

Test: Used clkctl utility to verfiy freq. changes are
actually applied.

Change-Id: I9ef0da66c73b15814b566e5ab07a565ac08b875a

[clock][amlogic] Add clock driver to VIM & Astro

Test: Boot up on vim & astro

Change-Id: I55cb7db3bda0a84fd75f75e62ef981a528e761fd

[dev][board] Remove some unneeded protocols from the board drivers

TEST: manual testing on vim2 and gauss
Change-Id: I884dc1bdbd1e9572bb42c40efe706b356178db64

[ddk][serial] Move the serial-impl protocol to its own header file

TEST: zircon builds

Change-Id: I730ad51964b48ca7f28099d2bc67957a7a075f51

[astro][video] Clean up board driver

Move video driver out of the main board driver

Test: Boot up on Astro

Change-Id: If7a04e4af5f9424fd59451f1b166e9e427714f7b

[astro][thermal] Initial commit for Temp Sensor

This CL is first of many to follow.
Thermal driver for Astro implements the following:
- Adds a thermal driver
- Thermal driver will consist of following:
- Temperature Sensor driver
- CPU Voltage & Frequency Scaling driver
- Some logic to set trip points etc.

This CL focuses primarily on the Temperature Sensor

Test: Tested on Astro and verified reading correct temp

Change-Id: I041c237389becd9876a6f0693e3d1248a2c83447

[astro][light] tcs3400 ambient light driver

ZX-2320 #comment progress

Test: Read device and confirm that readings match lighting conditions
$ dd if=/dev/sys/platform/0a:01:1/tcs-3400 of=/data/test-data.bin bs=2 count=3
2;dd[00041.319] 02879.02928> TCS-3400 clear light read: 0x0072
[00041.320] 02879.02928> TCS-3400 clear light read: 0x0072
3+0[00041.320] 02879.02928> TCS-3400 clear light read: 0x0072
records in
3+0 records out
6 bytes copied

Change-Id: Ia175b035d38f41ceeac2cca21e160be020dd2a57

[astro][display] Add support for canvas driver
zx-2317

Test: Tested on Astro and display came up successfully.

Change-Id: I9196b9fccf867394147f7844fd4dc8f7eaa3e1be

[board][astro] Bluetooth support:

- Configure Bluetooth UART

- Turn on Bluetooth enable GPIO

- Enable 32K clock for BT/Wifi module

Test: Manual on astro. UART and BT HCI drivers load, HCI reset command is sent,
UART is successfully switched to high speed.

Bug: NET-1005 # in progress

Change-Id: I5d8facfbeae4f8806aefe82c4e39c1d7bb52ef55

[zircon][sdio] Update board files to support sdio on aml-s905d2 and astro

This changeset updates the board files for sdio support but keeps it
diabled until sdio is fully functional

Change-Id: Ie2c6387bf9972ea9b970ad6e84dda5f5a3360ccb

[astro] Astro board driver for Amlogic RAW_NAND.

Change-Id: Ic6d0c029dbbce2b52505de2de00081ffca20a304

[dev][board][astro] Add binding for video decoder

Change-Id: I7f1ef7cacaa93767925d53d0bbcd996cab96cb8c

[astro][touch] ft3x27 driver

Change-Id: I2958fdef9e2a8b0a4b641dd5078d2fb6e60d1843

[dev][soc] Share aml-mali between astro and aml-s905d2

They have the same soc so it should work on both.

Change-Id: I97ef2faba697a5d3081965a48a559e1bcc9f6624

[astro][display] Basic display driver for Astro

Change-Id: I4f15704bdc6b5f8010803c21f5b85822dcff1182

[dev][board][astro] Initial board driver for astro

Using a copy of aml-s905d2 driver as a starting point

Change-Id: If83cc62942d8125a5c200665cff6882b25c77b11