ASoC: max98088: Staticise m98088_eq_band

This function is not exported and it does not seem to be called from
anywhere else therefore it should be static.

Signed-off-by: Dimitris Papastamos <[e-mail]>
Acked-by: Liam Girdwood <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/max98088.c

···
 /*
  * Load equalizer DSP coefficient configurations registers
  */
-void m98088_eq_band(struct snd_soc_codec *codec, unsigned int dai,
+static void m98088_eq_band(struct snd_soc_codec *codec, unsigned int dai,
                    unsigned int band, u16 *coefs)
 {
        unsigned int eq_reg;