ASoC: swr-dmic: Update audio capture sequence

Update audio capture sequence to avoid multiple bank switches
during multi mic usecase that helps in reducing the latency
for path setup.

Change-Id: Idac8bca97b3503cdbf82bb482e8a297a1fd20893
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>