pinctrl: digicolor: Use proper headers and drop OF dependency

The driver doesn't depend on the OF to be complied. Hence
the proper header to use is mod_devicetable.h. Replace of*.h with
the above mentioned and drop redundant dependency.

Signed-off-by: Andy Shevchenko <[e-mail]>
Acked-by: Baruch Siach <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/Kconfig

···
 
 config PINCTRL_DIGICOLOR
 	bool
-	depends on OF && (ARCH_DIGICOLOR || COMPILE_TEST)
+	depends on ARCH_DIGICOLOR || COMPILE_TEST
 	select PINMUX
 	select GENERIC_PINCONF
 

drivers/pinctrl/pinctrl-digicolor.c

···
  * - Pin pad configuration (pull up/down, strength)
  */
 
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/io.h>
 #include <linux/gpio/driver.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
 #include <linux/spinlock.h>
+
 #include <linux/pinctrl/machine.h>
 #include <linux/pinctrl/pinconf.h>
 #include <linux/pinctrl/pinconf-generic.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/pinctrl/pinmux.h>
+
 #include "pinctrl-utils.h"
 
 #define DRIVER_NAME	"pinctrl-digicolor"