pinctrl: pinconf: pinconf_show_config() can be static

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinconf.c

@@ -202,7 +202,7 @@ int pinconf_apply_setting(struct pinctrl_setting const *setting)
 
 #ifdef CONFIG_DEBUG_FS
 
-void pinconf_show_config(struct seq_file *s, struct pinctrl_dev *pctldev,
+static void pinconf_show_config(struct seq_file *s, struct pinctrl_dev *pctldev,
 		      unsigned long *configs, unsigned num_configs)
 {
 	const struct pinconf_ops *confops;