m7-common: tfa9887: Fix both speakers playing right channel

There was a little typo in the code that made left channel
not being played at all and right channel being played through two speakers.

Change-Id: I1f0328c77540df9cc075967ddac85d9598c91c5d
m7-common: Reset Speaker DMIC Endfire volume to default

Change-Id: I985ded6054e5b55df1f35f575baa796709f0a491