ASoC: SOF: ops: print out the polling register

Print the register offset out to provide more useful information for the
register polling debugging.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210521092804.3721324-4-kai.vehmanen@linux.intel.com


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