[L] Change in libgfxinit[master]: tigerlake: Fill out power and clocks module

[Tarun Tuli (Code Review)]

Attention is currently required from: Nico Huber, Angel Pons.

Tarun Tuli has uploaded a new patch set (#4) to the change originally created by Tim Wawrzynczak. ( https://review.coreboot.org/c/libgfxinit/+/67495 )

Change subject: tigerlake: Fill out power and clocks module
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tigerlake: Fill out power and clocks module

This is the modeset sequence for the display engine itself. TGL has
similarities to both SKL and BXT, but also adds new programming, like
MBUS credits, Bandwidth Buddy, and of course new chicken bits.

Tested on google/delbin; can still boot successfully to the kernel and
the kernel can still properly perform its own modeset and not crash :)

Signed-off-by: Tim Wawrzynczak 
Change-Id: I192fc07233af8c1d4da4495245e48ac1c779fa76

Signed-off-by: Tim Wawrzynczak 
Change-Id: I8f09696588aa73cebc7a44583ae5e029c705a535
---
M common/tigerlake/hw-gfx-gma-power_and_clocks.adb
M common/tigerlake/hw-gfx-gma-power_and_clocks.ads
2 files changed, 863 insertions(+), 14 deletions(-)

git pull ssh://review.coreboot.org:29418/libgfxinit refs/changes/95/67495/4