ASoC: arizona: Remove redundant extern declarations

Functions are given external linkage by default making the extern's
unnecessary, as such remove them.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/arizona.h

@@ -256,28 +256,24 @@ extern const struct soc_enum arizona_output_anc_src[];
 
 extern const struct snd_kcontrol_new arizona_voice_trigger_switch[];
 
-extern int arizona_in_ev(struct snd_soc_dapm_widget *w,
-			 struct snd_kcontrol *kcontrol,
+int arizona_in_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
 		  int event);
-extern int arizona_out_ev(struct snd_soc_dapm_widget *w,
-			  struct snd_kcontrol *kcontrol,
+int arizona_out_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
 		   int event);
-extern int arizona_hp_ev(struct snd_soc_dapm_widget *w,
-			 struct snd_kcontrol *kcontrol,
+int arizona_hp_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
 		  int event);
-extern int arizona_anc_ev(struct snd_soc_dapm_widget *w,
-			  struct snd_kcontrol *kcontrol,
+int arizona_anc_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
 		   int event);
 
-extern int arizona_eq_coeff_put(struct snd_kcontrol *kcontrol,
+int arizona_eq_coeff_put(struct snd_kcontrol *kcontrol,
 			 struct snd_ctl_elem_value *ucontrol);
-extern int arizona_lhpf_coeff_put(struct snd_kcontrol *kcontrol,
+int arizona_lhpf_coeff_put(struct snd_kcontrol *kcontrol,
 			   struct snd_ctl_elem_value *ucontrol);
 
-extern int arizona_clk_ev(struct snd_soc_dapm_widget *w,
-			  struct snd_kcontrol *kcontrol, int event);
-extern int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
-			      int source, unsigned int freq, int dir);
+int arizona_clk_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
+		   int event);
+int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source,
+		       unsigned int freq, int dir);
 
 extern const struct snd_soc_dai_ops arizona_dai_ops;
 extern const struct snd_soc_dai_ops arizona_simple_dai_ops;
@@ -300,35 +296,35 @@ struct arizona_fll {
 	char clock_ok_name[ARIZONA_FLL_NAME_LEN];
 };
 
-extern int arizona_dvfs_up(struct snd_soc_codec *codec, unsigned int flags);
-extern int arizona_dvfs_down(struct snd_soc_codec *codec, unsigned int flags);
-extern int arizona_dvfs_sysclk_ev(struct snd_soc_dapm_widget *w,
+int arizona_dvfs_up(struct snd_soc_codec *codec, unsigned int flags);
+int arizona_dvfs_down(struct snd_soc_codec *codec, unsigned int flags);
+int arizona_dvfs_sysclk_ev(struct snd_soc_dapm_widget *w,
 			   struct snd_kcontrol *kcontrol, int event);
-extern void arizona_init_dvfs(struct arizona_priv *priv);
+void arizona_init_dvfs(struct arizona_priv *priv);
 
-extern int arizona_init_fll(struct arizona *arizona, int id, int base,
+int arizona_init_fll(struct arizona *arizona, int id, int base,
 		     int lock_irq, int ok_irq, struct arizona_fll *fll);
-extern int arizona_set_fll_refclk(struct arizona_fll *fll, int source,
+int arizona_set_fll_refclk(struct arizona_fll *fll, int source,
 			   unsigned int Fref, unsigned int Fout);
-extern int arizona_set_fll(struct arizona_fll *fll, int source,
+int arizona_set_fll(struct arizona_fll *fll, int source,
 		    unsigned int Fref, unsigned int Fout);
 
-extern int arizona_init_spk(struct snd_soc_codec *codec);
-extern int arizona_init_gpio(struct snd_soc_codec *codec);
-extern int arizona_init_mono(struct snd_soc_codec *codec);
-extern int arizona_init_notifiers(struct snd_soc_codec *codec);
+int arizona_init_spk(struct snd_soc_codec *codec);
+int arizona_init_gpio(struct snd_soc_codec *codec);
+int arizona_init_mono(struct snd_soc_codec *codec);
+int arizona_init_notifiers(struct snd_soc_codec *codec);
 
-extern int arizona_init_spk_irqs(struct arizona *arizona);
-extern int arizona_free_spk_irqs(struct arizona *arizona);
+int arizona_init_spk_irqs(struct arizona *arizona);
+int arizona_free_spk_irqs(struct arizona *arizona);
 
-extern int arizona_init_dai(struct arizona_priv *priv, int dai);
+int arizona_init_dai(struct arizona_priv *priv, int dai);
 
 int arizona_set_output_mode(struct snd_soc_codec *codec, int output,
 			    bool diff);
 
-extern bool arizona_input_analog(struct snd_soc_codec *codec, int shift);
+bool arizona_input_analog(struct snd_soc_codec *codec, int shift);
 
-extern const char *arizona_sample_rate_val_to_name(unsigned int rate_val);
+const char *arizona_sample_rate_val_to_name(unsigned int rate_val);
 
 static inline int arizona_register_notifier(struct snd_soc_codec *codec,
 					    struct notifier_block *nb,