gralloc: Add support for prebuilt gralloc libs

If the user sets BOARD_GPU_DRIVERS to 'prebuilt' and passes a path
to the prebuilt gralloc binary via BOARD_GPU_DRIVER_BINARY, then
that prebuilt gralloc image will be used instead of building it from
source here.

Change-Id: I0fe3bc1919cacc38087afe3f76e4b8391975edbd
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
1 file changed