msm: kgsl: Add the entire memory range of certain objects in snapshot

Many snapshot objects are part of the same memory allocation (often
the same page).  Together these may number thousands of individual
objects but considerably fewer pages of allocated memory.

Add the entire GPU memory entry to the object list to avoid storing
each individual object. For IB objects and set state objects entire
memory entry is not added because these need to be parsed for
additional objects.

Change-Id: Ic0dedbad83e9507b365c3d6e256ab16b41a7dda0
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>