ASoC: Intel: catpt: Streamline power routines across LPT and WPT

There is no need for separate power on/off routines for LPT and WPT as
as the protocol is shared for both platforms. Make WPT routines generic
and reuse them in LPT case too.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20201116133332.8530-5-cezary.rojewski@intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>