msm8930: Enable Samsung audio

Change-Id: I5cfd2b472cbe179b711474c29b0df7f55288207f
Revert "msm8930: Disable hostNSOffload feature"

 * No real difference in battery usage noticed.
   Maybe a little bit better with this enabled.

This reverts commit 74e9ef5e6ff566dfbcbd543585b8c176e7d827be.

Change-Id: I91e1827ae396785931cf50871bae1b65b4bd1b66