asoc: codecs: Fix mute if hpf cut off freq set to 150hz

There is mute in recorded sound when hpf cut off freq is
150hz as hpf is never gated for the same.
Gate hpf register in order to avoid mute.

Change-Id: Ic6bb6da529d78140a734675dae8c8b9f220e0054
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>