gbm_gralloc: Sync with upstream project

This syncs the gralloc dir with the upstream gbm_gralloc project
here:
  https://github.com/robherring/gbm_gralloc

As of commit cecd1a2c8504 ("gralloc_gbm: Quiet logcat verbosity")
with the exception of Android.mk to which necessary local AOSP changes
have been made.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: If845e8cbe144db6df90a2c5eb3e844f361ece7ec
2 files changed