Rename gbm -> gbm_mesa am: 47ee478657 am: 75cea46e8e am: 54d530904a am: 1f0d1e48c8 am: 741fa33288

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/1416690

Change-Id: Ieb979a8cb62f24b50643f7d568d13d695541e74f