Sparse (make C=2) complains about undeclared variables. Fix by adding
a real prototype instead of 'extern' in sof-of-dev.c
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NDaniel Baluta <daniel.baluta@gmail.com>
Reviewed-by: NKai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: NPaul Olaru <paul.olaru@oss.nxp.com>
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210928072807.27838-1-peter.ujfalusi@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>