ASoC: SOF: update dsp core power status in common APIs

ASoC: SOF: update dsp core power status in common APIs

Only manage enabled_cores_mask in common snd_sof_dsp_core_power_up/down
APIs to ensure it stays in sync with actual DSP core state.

Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210128093850.1041387-4-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>