ASoC: ab8500-codec: don't export static symbol

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
type T;
identifier f;
@@

static T f (...) { ... }

@@
identifier r.f;
declarer name EXPORT_SYMBOL_GPL;
@@

-EXPORT_SYMBOL_GPL(f);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/ab8500-codec.c

@@ -2003,7 +2003,6 @@ static int ab8500_audio_setup_mics(struct snd_soc_codec *codec,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(ab8500_audio_setup_mics);
 
 static int ab8500_audio_set_ear_cmv(struct snd_soc_codec *codec,
 				enum ear_cm_voltage ear_cmv)
@@ -2036,7 +2035,6 @@ static int ab8500_audio_set_ear_cmv(struct snd_soc_codec *codec,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(ab8500_audio_set_ear_cmv);
 
 static int ab8500_audio_set_bit_delay(struct snd_soc_dai *dai,
 				unsigned int delay)