msm8960-common: use CAF QCOM Audio variant

Change-Id: I21a8fc82e36972c4f91e0a0861212125503e3af1
msm8960-common: move kernel configuration to common

Change-Id: I489503f336386196ac30ca14484b801319b2d476
msm8960-common: move init scripts to common where possible

Change-Id: If589a22d541cf12e02bbd945fc3a46ea56f90b7a
msm8960-common: update audio_policy with AUDIO_DEVICE_IN_BACK_MIC