msm: kgsl: Add ITCM/DTCM as part of the memory snapshot

While ITCM/DTCM are mapped as registers it doesn't make
any sense to dump them as registers. From the GMU point
of view it is just memory. Dump the registers as memory instead.

Change-Id: Iecdaaad304332fc4dd9d668710bcd373668664d8
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>