msm: kgsl: Do not capture DTCM on gmu boot failure

Accessing DTCM can cause NoC error sometimes if GMU is accessing
any of its TCMs at the same time as host.

Change-Id: I3d7a3169620854dbd659f378c216a7b15435c914
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>