ASoC: WCD9304: Fix pop level during start of recording

When recording is started, it is observed that the pop level is
much higher than expected. Fix this issue by enabling the High
Pass Filter on microphone path with a cut off frequency of 150Hz
when recording starts and reprogram the cut off frequency back
after a timeout of 300 millisecond.

CRs-fixed: 380966
(cherry picked from commit f9ed163835d1634a86cabc233d85bfe857f0eacf)
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>

Change-Id: If98dfaf0f9b8f14c306f2d6a59154a615752823b

Signed-off-by: Neha Pandey <nehap@codeaurora.org>