Currently there is no support for TSCS42xx audio CODECs.

Add support for TSCS42xx audio CODECs.
Reviewed-by: NCharles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: NSteven Eckhoff <steven.eckhoff.opensource@gmail.com>
Signed-off-by: NMark Brown <broonie@kernel.org>