ASoC: msm8x16-wcd: modify interrupt handling

In current SW, if multiple interrupts occurs at same time,
all the interrupts are handled in first interrupt context
and each interrupt is handled again in its own context.
Due to which single interrupt is handled twice which is inturn
configuring HW wrongly. Hence donot handle an interrupt in other
interrupt context.

CRs-Fixed: 1072485
Change-Id: I5bf7b69f39d903aa5ebb31d63d181b3f0785684a
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>