msm8974: Add SA+ and SVI blobs

Change-Id: I6cb7a65769551ee24b6e56b2430f48cf31b1593e
msm8974: Enable the Bluetooth HFP client

Change-Id: I31c4beb4f0114c205663c932649c266da7e72e78
msm8974: Enable the 5.1 audio passthru

Change-Id: I398de1d8cb9dc051e17f3267d273c4946c8af57e
msm8974: Enable PCM offload property

Change-Id: I523afe521fc2dc2f19f458298d0275a0be36ff50
msm8974: Raise the safe headset volume level

 * It's far too low, at around 50% right now.

Change-Id: I351e566c2ee16b41994ac5ae24ee76b011432534