hikey960: gralloc960: Add support for building w/  drm_hwcomposer

If we're building with drm_hwcomposer, we need to set the
following gralloc960 flags:

 ION_DMA_HEAP=1
 DISABLE_FRAMEBUFFER_HAL=1

Change-Id: I832993b0ade105c3f72c81a28de2b8c336d283e2
Signed-off-by: John Stultz <john.stultz@linaro.org>
1 file changed