anv: enable VK_FORMAT_G8_B8_R8_3PLANE_420_UNORM for modifier support
This is a missed format to properly support media interop for Android.
Currently only used when layering GL atop Vulkan on Android, but will
be used directly with Vulkan when the platform default renderer has
switched to skiavk in modern Android.
Test: CtsMediaTestCases and CtsVideoTestCases with angle on venus on anv
Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17808>