ASoC: wcd9310: make CFILT adjust time as a module parameter

Some of accessories on the headset jack takes longer to settle down
voltage.  Make adjust time to be configurable so those accessories can
be detected correctly.

Change-Id: I3c2f68c8a4bb1a8f94669bd910728f014ee39874
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>