libgav1: update to cl/267700628

this improves performance by ~30% from the last snapshot

Bug: 130249450
Bug: 140837331
Test: aosp_arm-eng aosp_arm64-eng aosp_x86-eng aosp_x86_64-eng build
Test: cts-tradefed run commandAndExit cts-dev --include-filter CtsMediaTestCases --module-arg "CtsMediaTestCases:include-filter:android.media.cts.DecoderTest#testAV1*" --module-arg "CtsMediaTestCases:include-filter:android.media.cts.AdaptivePlaybackTest#testAV1*" (bonito-userdebug)
Test: cts-tradefed run commandAndExit cts-dev -a {armeabi-v7a,arm64-v8a} --include-filter CtsMediaTestCases --module-arg "CtsMediaTestCases:include-filter:android.media.cts.DecoderTest#testAV1*" --module-arg "CtsMediaTestCases:include-filter:android.media.cts.AdaptivePlaybackTest#testAV1*" (bonito_hwasan-userdebug)
Test: (externally) libaom/Argon/Allegro test vectors, cpu/memory performance, fuzzing

Change-Id: I5747e8c6a67450dd6d0ad6800f26100a36df0e26
(cherry picked from commit 2bf918d9e5232a973c834ad56ca810277c467e7b)
45 files changed