asoc: codecs: update IIR cofficient values before IIR band enable

Currently IIR coefficient values are written to HW everytime when
digital core comes out of power collapse. This increases playback
cold start latency. So update IIR coefficient values before IIR
band enable.

Change-Id: I57ad54b4674ed0a49fdfc55d77c519568f5a7893
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>