vulkan/android: Fix suggestedYcbcrModel with !mapper4
What does this MR do and why?
vulkan/android: Fix suggestedYcbcrModel with !mapper4
Only mapper4 supports u_gralloc_get_buffer_basic_info(), other gralloc
implementations do not. So add a fallback, so that we aren't telling
the app that the suggestedYcbcrModel is RGB_IDENTITY. We only go down
this path for YUV formats.
Fixes android.graphics.cts.BasicVulkanGpuTest#testBasicBufferImportAndRenderingExternalFormat
Fixes: 8732a619f13b ("vulkan/android: Add common vkGetAndroidHardwareBufferPropertiesANDROID")
Signed-off-by: Rob Clark <robdclark@chromium.org>