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: 653019
Change-Id: I8fc27ca07c84c9381b162f32456f5578f796e468
Signed-off-by: Aravind Kumar <akumark@codeaurora.org>
1 file changed