msm: kgsl: snapshot: Support loading more indirect buffers

User side drivers are starting to use more indirect buffers
for CP_LOAD_STATE, so expand the snapshot to support grabbing
all of the possible combinations.

Change-Id: Ic0dedbadff743d03b5accb2a0299ab5dc0bc1a61
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>