pinctrl: don't include GPIOLIB private header

gpio_to_desc() is declared in linux/gpio.h so there's no need to include
gpiolib.h directly.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20231115165001.2932350-4-brgl@bgdev.plSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/core.c

@@ -24,6 +24,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 
+#include <linux/gpio.h>
 #include <linux/gpio/driver.h>
 
 #include <linux/pinctrl/consumer.h>
@@ -31,10 +32,6 @@
 #include <linux/pinctrl/machine.h>
 #include <linux/pinctrl/pinctrl.h>
 
-#ifdef CONFIG_GPIOLIB
-#include "../gpio/gpiolib.h"
-#endif
-
 #include "core.h"
 #include "devicetree.h"
 #include "pinconf.h"