pinctrl: uniphier: add UniPhier PH1-LD6b pinctrl driver

Add pin configuration and pinmux support for UniPhier PH1-LD6b SoC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/pinctrl/uniphier/Makefile b/drivers/pinctrl/uniphier/Makefile
index aed038c..e215b10 100644
--- a/drivers/pinctrl/uniphier/Makefile
+++ b/drivers/pinctrl/uniphier/Makefile
@@ -5,3 +5,4 @@
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_SLD8)		+= pinctrl-ph1-sld8.o
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_PRO5)		+= pinctrl-ph1-pro5.o
 obj-$(CONFIG_PINCTRL_UNIPHIER_PROXSTREAM2)	+= pinctrl-proxstream2.o
+obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_LD6B)		+= pinctrl-ph1-ld6b.o