[pci][dw][aml] Refactor AMLogic PCIe Driver

Refactor the AMLogic PCIe driver into two halves:

(1) The DesignWare PCIe Library
(2) The AMLogic PCIe Driver

The AMLogic Driver statically links against the DesignWare PCIe
Library. Logic that is common to the DesignWare IP exists only in
the library whereas individual SoCs can implement their own drivers
that use the common DesignWare code.

Subsequent CLs will introduce the HiSilicon implementation of the DW
PCIe block as well.

TEST: Booted on gauss and confirmed that PCI bus driver started,
published devices and that devices were able to bind.

Change-Id: I76a438c5781e649d3f274de20378bd6d29e21868

[dw][pcie] Pass ATU config as Device Metadata

The DesignWare PCI controller has an internal address
translation unit (iATU) that translates memory addresses
to PCI bus addresses.

For example, a memory read at address X might translate to
a PCI IO read for a particular device.

The memory addresses designated for the iATU differ by platform
and are only known by the board driver so we devise a scheme where
these ranges are passed as private device metadata to the
designware PCIe driver.

Test: Build and run on Gauss.
Previously IO writes weren't generating IO TLPs on the PCIe bus
which prevented drivers that relied on IO BARs from binding
correctly. Verified that IO TLPs are now generated on the bus by
reading data from drivers' IO space.

Change-Id: I8832415fe15578e0f7aca87e4a06decf5c79e421

[gauss] Gauss board driver for Amlogic RAW_NAND.

Change-Id: I0d7b657e184c43aa4b4d61bc7c1be0cb0f02dc54

[dev] Rename system/dev/soc to system/dev/lib

Change-Id: I9ebed28956566cc71bdfe142bff633ef50f8a9dc

[aml][pcie][dw] DW/Amlogic PCIe for Gauss

Implements a low level PCIe driver for the
Amlogic configuration of the DesignWare PCIe
controller.

The DW controller provides an address
translation unit that can be programmed to
translate addresses from the host address space
into PCI address space.

This driver configures one segment of the host's
address space to translate into the PCI ECAM
registers and programs the rest of the host's
PCI address space to be reserved for BARs.

A follow up patch will instantiate the PCI
bus driver using these address spaces.

Change-Id: I423f14ea2229af8f12b6f03882270b59acbc7a7b

[clk][amlogic][a113] Clock Protocol Driver

Implements the clock enable/disable protocol for the aml113 (meson-axg)

Change-Id: Id8d835f5fd9a384c2b8e783fb2e89088000f73b9

[gauss][led] disable this driver for now

iotxn_queue() is going away, which will break it, and it does a
few things that are not really correct relative to the driver model,
such that it'd be preferable to do a more significant cleanup than
just hack around the iotxn change.

Change-Id: Ica5574469cd26cd422f997bcc5e2b88f622a5983

[soc][amlogic] Reorganize Amlogic SOC support

Now we have a single system/dev/soc/amlogic directory with
subdirectories of include/ for different Amlogic SOC variants.

Other than the gauss board file, other modules now depend on this
via MODULE_HEADER_DEPS.
The gauss board file still needs to include this as a static library
fora113-clocks.c, but eventually this will likely move to a separate driver
and this will become a header-only module.

Change-Id: I8c3cb5e39e9ed56d56c120e2de435ac020a0e54e

[amlogic][i2c] Refactor the aml-a113 I2C driver

The driver is now separately loadable and the a113 specific configuration
is now in the gauss board driver.
This will allow us to use the driver for other Amlogic platforms.

Change-Id: I821c56562016fe449bc0896e81294ebe314fd9e3

[soc][aml-a113] GPIO driver refactoring

Refactor the aml-a113 driver so we can use it for other Amlogic platforms

Change-Id: I25f7a703e7006200643ae917317df4014e255de1

[ddk][i2c] Add helper for synchronous i2c transfers

Change-Id: I885bfc8df72617571d5ea8ca030362d459ed3efe

[dev][gauss led] Implement LED driver for gauss

Example usage:
echo "1"> /dev/sys/platform/0003:0001:0004/gauss-led/reset
echo "1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24" > /dev/sys/platform/0003:0001:0004/gauss-led/pwm
echo "153" > /dev/sys/platform/0003:0001:0004/gauss-led/duty_cycle
cat /dev/sys/platform/0003:0001:0004/gauss-led/pwm
cat /dev/sys/platform/0003:0001:0004/gauss-led/duty_cycle

Bug: 69431907
Test: Manual on device.
Change-Id: Ic229d214af4d7fe389e9ff757d23195fc5bfe2f4

[gauss] Refactor gauss platform bus driver

Move platform bus support driver for gauss to system/dev/board/gauss.

Also move gauss i2c test driver to system/dev/board/gauss.

Amlogic A113 specific code remains in system/dev/soc/aml-a113,
which is now a static library.

Later we may move code (i2c, gpio, etc) that works for other Amlogic SOCs
may get broken out into separate libraries.

Change-Id: If2133824563be3086a8ea41064e5955d6ae4d609