pinctrl: uniphier: add UniPhier pinctrl core support

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

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index f537df4..e56a17f 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -3,3 +3,5 @@
 
 obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
 obj-$(CONFIG_PINCTRL_SANDBOX)	+= pinctrl-sandbox.o
+
+obj-$(CONFIG_ARCH_UNIPHIER)	+= uniphier/