ARM: uniphier: enable CONFIG_PINCONF

Enable the pin configuration feature for UniPhier 64 bit SoCs.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/configs/uniphier_v8_defconfig b/configs/uniphier_v8_defconfig
index b7294a3..cb7680a 100644
--- a/configs/uniphier_v8_defconfig
+++ b/configs/uniphier_v8_defconfig
@@ -43,6 +43,7 @@
 CONFIG_SMC911X=y
 CONFIG_SMC911X_BASE=0x0
 CONFIG_SMC911X_32_BIT=y
+CONFIG_PINCONF=y
 CONFIG_SYSRESET=y
 CONFIG_SYSRESET_PSCI=y
 CONFIG_USB=y