ASoC: wcd9xxx: Enable EAR LO concurrency in codec

Add support for ear-lineout concurrency for
wcd934x audio codec. Add LO path power up, power
down, EAR path power up, power down sequences.
Avoid using class H when both EAR and LO enabled.

CRs-fixed: 1107183
Change-Id: I60099381cbf042b795f703b673717ab5ff4bd88f
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>