ASoC: SOF: debug: clarify operator precedence

ASoC: SOF: debug: clarify operator precedence

cppcheck warning:

for '&' and '?'. [clarifyCalculation]
 char *level = flags & SOF_DBG_DUMP_OPTIONAL ? KERN_DEBUG : KERN_ERR;
                                             ^

sound/soc/sof/debug.c:398:46: style: Clarify calculation precedence
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220304205733.62233-10-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>