Fix sepolicy after libgbm rename am: 06c07a3ffe am: f609e272ee am: 002a2165e5 am: 1219aab3a1

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/1416650

Change-Id: I30b02d9cfb04fbd886fd9c8236ab855eb4cfc593