pinctrl: nomadik: remove duplicate included header files

linux/seq_file.h is included more than once.
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/202301161545238948580@zte.com.cnSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/nomadik/pinctrl-abx500.c

@@ -442,8 +442,6 @@ static int abx500_get_mode(struct pinctrl_dev *pctldev, struct gpio_chip *chip,
 	return ret;
 }
 
-#include <linux/seq_file.h>
-
 static void abx500_gpio_dbg_show_one(struct seq_file *s,
 				     struct pinctrl_dev *pctldev,
 				     struct gpio_chip *chip,