ASoC: wcd934x: add support for HPH modes

Headphones support classH and classAB. Add support for
hifi, lowhifi, low power and ultra low power modes for classH.
Support hifi and lowhifi power modes for classAB.

CRs-Fixed: 1066331
Change-Id: I846f9704a5bf800583682f8dc2ec385a0ec64c61
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>