ASoC: rouleur-mbhc: Enhance impedance calculation logic

When headset insert, calculate impedance for multiple times
and stop calculating if the result is within the threshold.
Modify register write sequence as per rouleur software sequence.

Change-Id: Id035304963d0822f758d7a527a712aca500a8a78
Signed-off-by: Vijay Kumar Maddula <quic_vmaddula@quicinc.com>