msm: kgsl: Add a generic IB parser

Add generic IB parser to parse adreno IB's and find the objects
that are required to execute the IB. This generic parser can
be used from snapshot and other places like CFF to get the
list of objects that are required for an IB to execute
Use the generic parser from snapshot to find the objects in IB's that
need to be dumped during snapshot and implement IB object list in
snapshot so that the amount of time to take snapshot does not increase.

Change-Id: I7c1383392d04387027afe95aba9a94d0347c8f99
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>