pinctrl: uniphier: guard uniphier directory with CONFIG_PINCTRL_UNIPHIER

CONFIG_PINCTRL_UNIPHIER is more suitable than CONFIG_ARCH_UNIPHIER
to guard the drivers/pinctrl/uniphier directory.

The current CONFIG_PINCTRL_UNIPHIER_CORE is a bit long, so rename it
into CONFIG_PINCTRL_UNIPHIER.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/pinctrl/uniphier/Makefile b/drivers/pinctrl/uniphier/Makefile
index c5cdd84..3667bd3 100644
--- a/drivers/pinctrl/uniphier/Makefile
+++ b/drivers/pinctrl/uniphier/Makefile
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_PINCTRL_UNIPHIER_CORE)		+= pinctrl-uniphier-core.o
+obj-y						+= pinctrl-uniphier-core.o
 
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_LD4)		+= pinctrl-ph1-ld4.o
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_PRO4)		+= pinctrl-ph1-pro4.o