am d55f0adf: Qualify the source argument of atomic loads as a const pointer.

Merge commit 'd55f0adfb5ec4202ad5bd5d188e66c0f6a27b0aa' into gingerbread-plus-aosp

* commit 'd55f0adfb5ec4202ad5bd5d188e66c0f6a27b0aa':
  Qualify the source argument of atomic loads as a const pointer.