gralloc: add cros_gralloc_convert_map_usage

This is to unify map usage conversion for gralloc frontends.

BUG=b:199524294
TEST=build

Change-Id: I488213ca889a98f39a86e0340a315052cb8f624f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/3171104
Tested-by: Yiwei Zhang <zzyiwei@chromium.org>
Auto-Submit: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Jason Macnak <natsu@google.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Yiwei Zhang <zzyiwei@chromium.org>
4 files changed