UPSTREAM:gallium/va: Remove VP9 header parsing for secure playback

Latest VCN FW is capable of parsing the VP9 uncompressed header.
Removing the parsing from gallium.

BUG=b:205059116
TEST=Play vp9 widevine content

Signed-off-by: Veerabadhran Gopalakrishnan <veerabadhran.gopalakrishnan@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13106>
(cherry picked from commit 2c2b5fc65fd98c74d99dda55980c668a890ac973)
Signed-off-by: SureshGuttula <suresh.guttula@amd.corp-partner.google.com>
Change-Id: I0678b2d5c2120afe5d6afff42662c18f839914d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/mesa/+/3260295
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Jeffrey Kardatzke <jkardatzke@google.com>
Commit-Queue: Jeffrey Kardatzke <jkardatzke@google.com>
Tested-by: Jeffrey Kardatzke <jkardatzke@google.com>
1 file changed