msm: HTC: m7: usb and bt share slim tx channels

Change-Id: I5c22d90a1c229938e61b723c55c5e22076996c35
msm: HTC: m7: small snd_soc dai parameter changes

Change-Id: If98b1df5eb137dbeff15aa8853ca4f05e0fdecd6
msm: HTC: m7: use mutex instead of atomic reads for aux_pcm

Change-Id: Iac8bd9ef071ff09e4fd76d515408066febd453bf