The sof_debug_check_flag() is available for checking flags set in
sof_core_debug.

sof_core_debug can be marked static in core.c
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: NRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NKai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211223113628.18582-5-peter.ujfalusi@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>