ASoC: wcd9xxx: Refactor interrupt mapping per codec

Different codecs can have different interrupt mappings. In order for the
common drivers to be able to request/free the codec interrupts, refactor
out the codec interrupt mapping from the common drivers to individual
codec drivers.

CRs-fixed: 552734
Change-Id: I13c7500f0e3af0f06754b58e433ebed6f0da8274
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>