ASoC: wcd9335: Update impedance detection parameters

Update mbhc impedance detection parameters namely, LDO control
and Nshift, to get better accuracy for headphone left and right
impedance values.

Change-Id: I8b3271ee9af91b9e921957998e0fb074ffdebe86
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>