ASoC: wcd: disable interrupts properly and modify headphone detection

Correct disabling of analog and digital interrupts
and correct headphone detection.
Currently cross_conn_det function is disabling MICBIAS,
due to this recording/button detection is not working
if cable is inserted in recording mode.

CRs-Fixed: 689558
Change-Id: I454e7e0a3cf180d0df9afdd672f1241ecfdfcdc9
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>