msm: kgsl: Add support for 64 bit objects to snapshot

The good news is that we have 64 bit memory objects. The bad news is
that sometimes they break. Add support for 64 bit objects to snapshot
so we can dump what we need.

Change-Id: Ic0dedbad740dfa657475ba8e5b79bb66a177841e
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>