gralloc.cpp

HAL_PIXEL_FORMAT_YCbCr_420_888 does not specify the exact
buffer layout. EmulatedFakeCamera3.cpp uses interleaved
UV planes, while other places place them separately.

Bug: 130295800
Bug: 129974968
Test: run cts -m CtsCameraTestCases \
      -t android.hardware.camera2.cts.ImageReaderTest#teutYUVResolutions
Merged-In: If3a495aa794d9ab09288b7b92be7258a07cc077d
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: I33f6777b5cca6f4fa0c61ac3db994230d6b6efb0