msm: kgsl: Print the nearest active GPU buffers to a faulting address

Print the two active GPU memory entries that bracket a faulting GPU
address. This will help diagnose premature frees and buffer ovverruns.

Check if the faulting GPU address was freed by the same process.

Change-Id: Ic0dedbadebf57be9abe925a45611de8e597447ea
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Vladimir Razgulin <vrazguli@codeaurora.org>