dri: add AR12 and AR15 format support

Both formats are supported on lima and sun4i_drm.

Using this format can improve performance
when image quality is less important.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
35 jobs for !8241 with dri-add-ar12-and-ar15-support in 9 seconds (queued for 2 seconds)
latest detached
Status Job ID Name Coverage
  Sanity
passed #6360541
sanity

00:00:09

 
  Container
manual #6360544
aarch64 manual
arm_build
manual #6360545
manual
arm_test-base
manual #6360546
windows shell 1809 mesa manual
windows_build_vs2019
manual #6360542
manual
x86_build-base
manual #6360543
manual
x86_test-base
 
  Container 2
created #6360554
android_build
created #6360557
arm64_test
created #6360558
armhf_test
created #6360551
i386_build
created #6360547
kernel+rootfs_amd64
created #6360548
aarch64
kernel+rootfs_arm64
created #6360549
aarch64
kernel+rootfs_armhf
created #6360552
ppc64el_build
created #6360553
s390x_build
created #6360550
x86_build
created #6360555
x86_test-gl
created #6360556
x86_test-vk
 
  Meson X86 64
created #6360564
meson-clang
created #6360565
meson-clover
created #6360561
meson-clover-testing
created #6360562
meson-gallium
created #6360563
meson-release
created #6360559
meson-testing
created #6360560
meson-testing-asan
created #6360566
meson-vulkan
 
  Build Misc
created #6360567
meson-android
created #6360569
aarch64
meson-arm64
created #6360570
aarch64
meson-arm64-build-test
created #6360568
aarch64
meson-armhf
created #6360572
meson-i386
created #6360575
meson-mingw32-x86_64
created #6360574
kvm
meson-ppc64el
created #6360573
kvm
meson-s390x
created #6360571
allowed to fail
scons-win64