ARM: uniphier: drop PH1- prefix from CONFIG options and file names

The current CONFIG names like "CONFIG_ARCH_UNIPHIER_PH1_PRO4" is too
long.  It would not hurt to drop "PH1_" because "UNIPHIER_" already
well specifies the SoC family.  Also, rename files for consistency.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/pinctrl/uniphier/Kconfig b/drivers/pinctrl/uniphier/Kconfig
index 33d6763..d22d485 100644
--- a/drivers/pinctrl/uniphier/Kconfig
+++ b/drivers/pinctrl/uniphier/Kconfig
@@ -3,39 +3,39 @@
 config PINCTRL_UNIPHIER
 	bool
 
-config PINCTRL_UNIPHIER_PH1_LD4
+config PINCTRL_UNIPHIER_LD4
 	bool "UniPhier PH1-LD4 SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_PH1_LD4
+	depends on ARCH_UNIPHIER_LD4
 	default y
 	select PINCTRL_UNIPHIER
 
-config PINCTRL_UNIPHIER_PH1_PRO4
+config PINCTRL_UNIPHIER_PRO4
 	bool "UniPhier PH1-Pro4 SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_PH1_PRO4
+	depends on ARCH_UNIPHIER_PRO4
 	default y
 	select PINCTRL_UNIPHIER
 
-config PINCTRL_UNIPHIER_PH1_SLD8
+config PINCTRL_UNIPHIER_SLD8
 	bool "UniPhier PH1-sLD8 SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_PH1_SLD8
+	depends on ARCH_UNIPHIER_SLD8
 	default y
 	select PINCTRL_UNIPHIER
 
-config PINCTRL_UNIPHIER_PH1_PRO5
+config PINCTRL_UNIPHIER_PRO5
 	bool "UniPhier PH1-Pro5 SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_PH1_PRO5
+	depends on ARCH_UNIPHIER_PRO5
 	default y
 	select PINCTRL_UNIPHIER
 
-config PINCTRL_UNIPHIER_PROXSTREAM2
+config PINCTRL_UNIPHIER_PXS2
 	bool "UniPhier ProXstream2 SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_PROXSTREAM2
+	depends on ARCH_UNIPHIER_PXS2
 	default y
 	select PINCTRL_UNIPHIER
 
-config PINCTRL_UNIPHIER_PH1_LD6B
+config PINCTRL_UNIPHIER_LD6B
 	bool "UniPhier PH1-LD6b SoC pinctrl driver"
-	depends on ARCH_UNIPHIER_PH1_LD6B
+	depends on ARCH_UNIPHIER_LD6B
 	default y
 	select PINCTRL_UNIPHIER