update media*.xml from kk_2.7-stable branch

Change-Id: I886ce25051c916f50a82a4631ee7a9d0cd9c532b
import some media_profile.xml changes from stock rom

Change-Id: I0d63473a9807fa44a080e68069d2819bc6512f23
add atmel calibration file

Change-Id: I599ec9380a6397e9ee6151e5624560ac778240f8
update audio_policy.conf from kk_2.7-stable branch

Change-Id: I7bb5dc43d3be62f68db49e57c48759cbaaaa1bf5