ASoC: codecs: Update internal codec as split codecs

Internal codec variant has digital codec in
MSM and analog codec in PMIC, add respective
split codecs support to register two separate codecs.
Add digital codec as a child to analog codec and
handle inter-dependencies like sequences, SSR,
version info.

Change-Id: I6ead859ed0ad5c926d439a3985a5c4904ff757b5
Signed-off-by: Divya Ojha <dojha@codeaurora.org>
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>