asoc: sdm660: Add changes to enable HiFi mode

Add changes to enable HiFi mode for lineout path to work.
Update RX channel text to support multichannel enum values.

CRs-Fixed: 2330088
Change-Id: I60d7517e91266e6713b613813e5a1259aaa86d65
Signed-off-by: Dhanalakshmi Siddani <dsiddani@codeaurora.org>