Mark libgrallocusage as vendor_available

libgrallocusage is used by libui which will be vendor_available: true.

Test: BOARD_VNDK_VERSION=current m libgrallocusage is successful
Change-Id: I476768d8b103033f3b8e5b09f53f4ac422ae377c
Merged-In: I476768d8b103033f3b8e5b09f53f4ac422ae377c
1 file changed