ALSA: hda: cs35l41: mark cs35l41_verify_id() static

The newly introduced function is global but only called in this one
file and has no extern prototype, so it should probably be static:

sound/pci/hda/cs35l41_hda.c:733:5: error: no previous prototype for 'cs35l41_verify_id' [-Werror=missing-prototypes]
  733 | int cs35l41_verify_id(struct cs35l41_hda *cs35l41, unsigned int *regid, unsigned int *reg_revid)

Fixes: 881b7bce ("ALSA: hda: cs35l41: Run boot process during resume callbacks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20231027152515.482411-1-arnd@kernel.orgSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/cs35l41_hda.c

@@ -730,7 +730,7 @@ static int cs35l41_hda_channel_map(struct device *dev, unsigned int tx_num, unsi
 				    rx_slot);
 }
 
-int cs35l41_verify_id(struct cs35l41_hda *cs35l41, unsigned int *regid, unsigned int *reg_revid)
+static int cs35l41_verify_id(struct cs35l41_hda *cs35l41, unsigned int *regid, unsigned int *reg_revid)
 {
 	unsigned int mtl_revid, chipid;
 	int ret;