pinctrl: Add pinctrl-s3c64xx driver

This patch adds pinctrl-s3c64xx driver which implements pin control
interface for Samsung S3C64xx SoCs.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/pinctrl-samsung.c b/drivers/pinctrl/pinctrl-samsung.c
index 8b15c66..4f54faf 100644
--- a/drivers/pinctrl/pinctrl-samsung.c
+++ b/drivers/pinctrl/pinctrl-samsung.c
@@ -971,6 +971,10 @@
 	{ .compatible = "samsung,exynos4x12-pinctrl",
 		.data = (void *)exynos4x12_pin_ctrl },
 #endif
+#ifdef CONFIG_PINCTRL_S3C64XX
+	{ .compatible = "samsung,s3c64xx-pinctrl",
+		.data = s3c64xx_pin_ctrl },
+#endif
 	{},
 };
 MODULE_DEVICE_TABLE(of, samsung_pinctrl_dt_match);