msm: kgsl: Dump snapshot on device start failure

If device start fails due to bootstrap or due to ME init
then dump the snapshot. The snapshot can be used to debug
the root cause of failure.

Conflicts:
	drivers/gpu/msm/adreno_ringbuffer.c

CRs-Fixed: 781244
Change-Id: Ib3d4f4c6a698f56e426d8ae5a994dc40f705561b
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>