BUG: 755405: (Mic fix on Samsung devices) Point to a modified version of AOSP libmedia with symbols added for the Samsung's Audio HAL to work.

Before merging this pull-request, someone from Mozilla team needs to fork my https://github.com/atilag/android-frameworks-base-libmedia-samsung project.
More details on Comment #20 of Bug: 755405 ( https://bugzilla.mozilla.org/show_bug.cgi?id=755405 )