ASoC: wcd9xxx: Add INP2, INP3, INP4 for IIR paths

Add INP2, INP3, INP4 for IIR paths to provide client to use
any one of the four different paths for sidetone

CRs-Fixed: 612492
Change-Id: I6087487604edc249c1f2451cb0d9635399ec74ba
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
1 file changed