Rename gbm -> gbm_mesa

The "gbm" name conflicts with recent changes to minigbm for the
system.img.

Bug: 167297318
Change-Id: I2f220c829fa18e09962fab132155b3ea69680757
diff --git a/gralloc/Android.mk b/gralloc/Android.mk
index 049b019..ec1c38e 100644
--- a/gralloc/Android.mk
+++ b/gralloc/Android.mk
@@ -28,7 +28,7 @@
 
 LOCAL_SHARED_LIBRARIES := \
 	libdrm \
-	libgbm \
+	libgbm_mesa \
 	liblog \
 	libcutils