minigbm: Add GBM_BO_USE_CAMERA_{READ,WRITE} usage flags

Add a new GBM usage flag for buffers used a output for camera subsystem.
It corresponds to Android GRALLOC_USAGE_HW_CAMERA_{READ,WRITE} flags and
translates to the same BO_USE_HW_CAMERA_{READ,WRITE} flags of drv.

BUG=b:62358788
TEST=compile

Change-Id: Ib7063437e39d1e08f643763c6ce383ce8657f5ce
Reviewed-on: https://chromium-review.googlesource.com/560935
Commit-Ready: Tomasz Figa <tfiga@chromium.org>
Tested-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-by: Ricky Liang <jcliang@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
2 files changed