msm8974: Use the normal speaker output

 * These speakers are differential, not stereo.

Change-Id: I678bdc99314768fcc02a1db5f32c8809bd2d15a1
msm8974: Offload all the things!

 * Offload is very stable now, so offload all the things.

Change-Id: I41cb0df2310e9c15ad5c434858c65b26169911f4