BACKPORT: radeonsi/vcn: adding av1 decoding film grain block

add the logic for calculating film grain related
coefficients for VCN to generate film grain output.

BUG=b:257875959
TEST=tast run <ip>  video.ChromeStackDecoderVerification.av1_film_grain

Reviewed-by: Leo Liu <leo.liu@amd.com>
Change-Id: Ia7bc71d9eb3173c2501b46acf8bc4aeccbcaf8b1
Signed-off-by: Ruijing Dong <ruijing.dong@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19660>
(cherry picked from commit b28356745686571676742f3822fd371b95e8742b)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/mesa/+/4109862
Reviewed-by: Suresh Guttula <suresh.guttula@amd.corp-partner.google.com>
Reviewed-by: Jao-ke Chin-Lee <jchinlee@google.com>
Tested-by: Himanshu Nayak <himanshu.nayak@amd.corp-partner.google.com>
Commit-Queue: Himanshu Nayak <himanshu.nayak@amd.corp-partner.google.com>
2 files changed