Revert "sound control: add register cache"

This reverts commit aead9b9b1a606960641b1226e3975db10fa6f1ba.
Revert "Sound Control: (OPTIONAL) add power amp registers access control as well"

This reverts commit 3b0e03369a1873778c03b748fd037882961522ee.
Revert "Sound Control: (Optional) work around for Nexus 4/5 audio issues"

This reverts commit dbfea2966970e3294730b4ebccd9d133ff878bff.
Revert "Sound Control: WCD9320: expose additional controls"

This reverts commit b62f5b88e0b172191b6a48e901305b724df5efb3.
Revert "sound control: WCD9320: update speaker gain control for Z1"

This reverts commit 14a31f5081eedd3249e3c4c1c87887429cda3ef2.
Revert "sound control 3.x: Initial GPL release for WCD9320 Audio Codec"

This reverts commit a09d5f211c0e919d72d02e62774c615275c3c993.
Revert "Revert "sound: add fk sound control""

This reverts commit 9710ba330c379f5cb89416477f4714919edb0bf8.