ALSA: ASoC: Staticise keyclick dev_attr in tlv320aic26

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>

sound/soc/codecs/tlv320aic26.c

@@ -418,7 +418,7 @@ static ssize_t aic26_keyclick_set(struct device *dev,
 	return count;
 }
 
-DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set);
+static DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set);
 
 /* ---------------------------------------------------------------------
  * SPI device portion of driver: probe and release routines and SPI