m7: add sound devices needed
Update m7 board for audio, added apq8064_m7 sound, updated makefile to build this one on M7 .. Included earpiece fix by tbalden (https://github.com/TeaMSeven/android_kernel_htc_m7-sense/commit/a43fcaa9e6c798abf5a4275b2cafbea01b130aec)