Revert "sound control: WCD9320: update speaker gain control for Z1"

This reverts commit e01ed4da7d3deb9f794489e6b3dfbf97930b7d46.
Revert "sound control 3.x: Initial GPL release for WCD9320 Audio Codec"

This reverts commit 8c20b3eee94e58f86e4a77774fe448d12e0db2cb.
Revert "Sound Control: WCD9320: expose additional controls"

This reverts commit a7ead4017519469a684a4c025245bed231c1b1e0.