ASoC: codecs: tfa989x: fix register access comments

Fix comments regarding register access based on review feedback[1].

[1]: https://lore.kernel.org/all/YppQ7BiqlBDMNsuc@gerhold.net/Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
Link: https://lore.kernel.org/r/20220920115014.952062-1-amartinz@shiftphones.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/tfa989x.c

@@ -193,7 +193,7 @@ static int tfa9890_init(struct regmap *regmap)
 {
 	int ret;
 
-	/* unhide keys to allow updating them */
+	/* temporarily allow access to hidden registers */
 	ret = regmap_write(regmap, TFA989X_HIDE_UNHIDE_KEY, 0x5a6b);
 	if (ret)
 		return ret;
@@ -203,7 +203,7 @@ static int tfa9890_init(struct regmap *regmap)
 	if (ret)
 		return ret;
 
-	/* hide keys again */
+	/* hide registers again */
 	ret = regmap_write(regmap, TFA989X_HIDE_UNHIDE_KEY, 0x0000);
 	if (ret)
 		return ret;