Revert "UPSTREAM: drm/amdgpu: enable ABGR and XBGR formats (v2)"

This reverts commit 2eec8799ba26fe5581d294cb14430e95801e87ef.

Reason for revert: Causes B/R to be swapped in some android apps (b/132366371)

Original change's description:
> UPSTREAM: drm/amdgpu: enable ABGR and XBGR formats (v2)
>
> Add support for DRM_FORMAT_{A,X}BGR8888 in amdgpu with amd dc disabled
>
> (v2) Crossbar registers are defined and used to swap red and blue channels,
>      keeping the existing coding style in each of the dce modules.
>      After setting crossbar bits in fb_swap, use bitwise OR for big endian
>      where required in DCE6 and DCE8 which do not rely on REG_SET_FIELD()
>
> Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Drew Davenport <ddavenport@chromium.org>
> (cherry picked from commit 00ecc6e6d4eeba9681ec91f9601a9ed1a68a9e7f)
>
> BUG=none
> TEST=check formats in modetest; modify drm_cursor_test to use XBGR8888 format
>
> Change-Id: If4f8c870a1fb9b8d91b123bb0d59f4268b2ac3da
> Reviewed-on: https://chromium-review.googlesource.com/1570626
> Commit-Ready: Drew Davenport <ddavenport@chromium.org>
> Tested-by: Drew Davenport <ddavenport@chromium.org>
> Reviewed-by: Sean Paul <seanpaul@chromium.org>
> Reviewed-by: Stphane Marchesin <marcheu@chromium.org>

Bug: none
Change-Id: If732cfacdec57850cd1611f52df3c54d769f64c3
Reviewed-on: https://chromium-review.googlesource.com/1625022
Commit-Ready: Drew Davenport <ddavenport@chromium.org>
Tested-by: Drew Davenport <ddavenport@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Drew Davenport <ddavenport@chromium.org>
(cherry picked from commit 5328f70bd0e02baf63118771957fc6322f84d8c9)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/1629991
Commit-Queue: Drew Davenport <ddavenport@chromium.org>
6 files changed