[intel-i915] Separate ddis from pipes/transcoders

This change creates a standalone Pipe class which manages hardware
pipes and transcoders, which leaves displays to only manage ddis. This
allows more dynamic configuration of the hardware.

Test: Virtcon and hotplugging on skl NUC/kbl NUC/eve/acer, virtcon
switching, boot menu, display-test, vkcube on skl NUC.

Change-Id: I845ec143b14866099f7b17840dfe24492f6e5909

[intel-i915] Move bootloader display into simple driver

Change-Id: Ie231a28e21fe8ecb76e16c2c839a255bbb2a6eae

[intel-i915][edid] Create standalone edid library

Change-Id: I0bceb8ef276b836e25c89830ff155c8a02965a97

[intel-i915] Refactor interrupts and add vsync

Change-Id: I9645afa3a49fdc9e80c8ddfa61b3c37a8c79a524

[intel-i915] Only enable power wells when in use

Change-Id: I4cde102b41ef4a39f19f6c71a2de2725bfb34b10

[intel-i915] Read VBT to check for ddi type

Change-Id: Ia6daa1c0db445a719b57560793ffc690f1815bef

[intel-i915] Add allocator to gtt

Change-Id: I49ecd0797938b3975701ccea566d90023d7d8928

[dev][i915] Switch code over to hwreg lib

The hwreg code is derived from registers-base.h and has support for
additional features (like reserved-zero bits).

Change-Id: I1476a23de273896e029c99231833d30d4105e3cd

[system][intel-i915] Add DisplayPort configuration

Change-Id: I7ff60fa0be08f8ebbed048829c677aec7fa69c3e

[system][intel-i915] Add HDMI configuration

The bulk of this logic is disabled behind a #define flag.

Change-Id: I3240895203b71bfa4fc61f2a7df723bae55ede71

[dev][intel-i915] Create dedicated display class

Change-Id: I98e1a550ded205f66c56a74e98873478645b8e3c

[dev][intel-i915] Allocate our own framebuffer

This CL reapplies change 90324. It fixes a fb size calculation error in
gtt.cpp which caused failures with some display dimensions. It also
relies on a devmgr fix in change 94798 to not break full fuchsia local
storage installations.

Change-Id: I737074f0201ed613ac35f0c99fd3d2c4bbd9e55f

Revert "[dev][intel-i915] Allocate our own framebuffer"

This reverts commit 49b79aa77b7c9c9ce28cd68374da9fa4c804cbd3.

Reason for revert: Doesn't work on Acer

[00009.799] 02175.02198> i915: Failed to allocate gfx address for framebuffer

Original change's description:
> [dev][intel-i915] Allocate our own framebuffer
>
> Change-Id: I2b39e369e81b403231edb60955ccc239a69ebcc0

TBR=cstout@google.com,teisenbe@google.com,stevensd@google.com

Change-Id: Icd2ab9bc1dd85bbb443979afd42c3811aaf62b9e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true

[dev][intel-i915] Allocate our own framebuffer

Change-Id: I2b39e369e81b403231edb60955ccc239a69ebcc0

[dev][intel-i915] Convert driver to c++/ddktl

Change-Id: I927ef64122402fee3e661c8a473b24423dca63d9

[zx] Magenta -> Zircon

The Great Renaming is here!

Change-Id: I3229bdeb2a3d0e40fb4db6fec8ca7d971fbffb94

[udev][intel-i915] rename

Change-Id: I569575d65a0d610ebd2a2844a45030483cfbbab1