dumb_driver: should be rgb565

bgr565 is not required, but what's required from Android gralloc is
mapped to DRM_FORMAT_RGB565.

BUG=n/a
TEST=n/a

Disallow-Recycled-Builds: test-failures
Change-Id: Ic0ed0fb1accde364e3f676d9a02cf3a7d735e33a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/3291888
Tested-by: Yiwei Zhang <zzyiwei@chromium.org>
Commit-Queue: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Jason Macnak <natsu@google.com>
Reviewed-by: Chia-I Wu <olv@google.com>
1 file changed