ASoC: msm: Use msm_route_ec_ref_rx for widget update

In default switch case msm_route_ec_ref_rx value is 0 or NONE
but mux contains value passed from user space to avoid this
error scenario widget power update should call with
msm_route_ec_ref_rx value.

Change-Id: I6b03e9846022965d91796c6b17ca336697444ce3
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>