Sound Control: expose direct register manipulations to userspace

bump driver version to 3.3

Change-Id: Ia9d45cb6d0b0c28083c08b67b9793fe846aafc1a
Signed-off-by: Paul Reioux <reioux@gmail.com>
Sound Control: Misc clean up for newer WCD9xxx SOCs

Bump driver version to 3.4

Change-Id: Id13d4f0173d727c8be64d68b0a98a407dfafce84
Signed-off-by: Paul Reioux <reioux@gmail.com>
Sound Control: let register lock be dependent on different hw revisions

Change-Id: I2847142b9fa742006f72b055bd5271a8de53620e
Signed-off-by: Paul Reioux <reioux@gmail.com>