Move minigbm.debug property to minigbm_msm/device.mk am: d898026dd5 am: cb740dde3e

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/3026223

Change-Id: I8cfbbe4f338a4a88a09d3361d010d7020f57d20b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>