am 0859b764: Make wifi scan async. (don\'t auto-merge)

Merge commit '0859b764719735e4b9aea5df6051ece13e212841' into gingerbread-plus-aosp

* commit '0859b764719735e4b9aea5df6051ece13e212841':
  Make wifi scan async. (don't auto-merge)