pinctrl: uniphier: split pinctrl driver for PH1-LD11 and PH1-LD20

PH1-LD11 and PH1-LD20 have much pin controlling in common, so I
added a single driver shared between them in the initial commit.

However, the Ethernet pin-mux settings I am going to add are
different with each other, and they may diverge more as the
progress of development.  Split it into two dedicated drivers.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/pinctrl/uniphier/Kconfig b/drivers/pinctrl/uniphier/Kconfig
index 1856ff0..7febea2 100644
--- a/drivers/pinctrl/uniphier/Kconfig
+++ b/drivers/pinctrl/uniphier/Kconfig
@@ -39,9 +39,15 @@
 	default y
 	select PINCTRL_UNIPHIER
 
+config PINCTRL_UNIPHIER_LD11
+	bool "UniPhier PH1-LD11 SoC pinctrl driver"
+	depends on ARCH_UNIPHIER_LD11
+	default y
+	select PINCTRL_UNIPHIER
+
 config PINCTRL_UNIPHIER_LD20
-	bool "UniPhier PH1-LD11/PH1-LD20 SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_LD11 || ARCH_UNIPHIER_LD20
+	bool "UniPhier PH1-LD20 SoC pinctrl driver"
+	depends on ARCH_UNIPHIER_LD20
 	default y
 	select PINCTRL_UNIPHIER