pinctrl: UniPhier: add UniPhier pinctrl core support

The core support for the pinctrl drivers for all the UniPhier SoCs.

Changes in v2:
  - drop vogus THIS_MODULE because this file is always built-in
  - drop vogus "include <linux/module.h> because this file is
    always built-in

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 100d9ac..e6362c6 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -240,6 +240,7 @@
 source "drivers/pinctrl/sh-pfc/Kconfig"
 source "drivers/pinctrl/spear/Kconfig"
 source "drivers/pinctrl/sunxi/Kconfig"
+source "drivers/pinctrl/uniphier/Kconfig"
 source "drivers/pinctrl/vt8500/Kconfig"
 source "drivers/pinctrl/mediatek/Kconfig"