ASoC: cs35l45: Corrects cs35l45_get_clk_freq_id function data type

Changes cs35l45_get_clk_freq_id() function data type from unsigned int
to int. This function is returns a positive index value if successful
or a negative error code if unsuccessful.

Functionally there should be no difference as long as the unsigned int
return is interpreted as an int, however it should be corrected for
readability.

Signed-off-by: Ricardo Rivera-Matos <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/cs35l45-tables.c

···
 	{ 0x3B, 24576000 },
 };
 
-unsigned int cs35l45_get_clk_freq_id(unsigned int freq)
+int cs35l45_get_clk_freq_id(unsigned int freq)
 {
 	int i;
 

sound/soc/codecs/cs35l45.h

···
 extern const struct regmap_config cs35l45_i2c_regmap;
 extern const struct regmap_config cs35l45_spi_regmap;
 int cs35l45_apply_patch(struct cs35l45_private *cs35l45);
-unsigned int cs35l45_get_clk_freq_id(unsigned int freq);
+int cs35l45_get_clk_freq_id(unsigned int freq);
 int cs35l45_probe(struct cs35l45_private *cs35l45);
 void cs35l45_remove(struct cs35l45_private *cs35l45);