Merge changes I1dbe1343,If2efa95c,Id299d224,I81fb7eee,Id3a3706d,Iecb7b40a,Icc18437a into msm-3.0

* changes:
  gpu: ion: Refactor debugfs printing
  gpu: ion: Add error message when allocation fails
  gpu: ion: Fix ion client name allocation
  gpu: ion: Add decrement of mapping count
  gpu: ion: Clean up logging messages
  gpu: ion: Fix SCM call message size
  gpu: ion: Add support for adjacent heaps