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 <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/max98088.c

@@ -613,7 +613,7 @@ static int max98088_volatile_register(unsigned int reg)
 /*
  * 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;