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/arch/arm/mach-uniphier/early-pinctrl/Makefile b/arch/arm/mach-uniphier/early-pinctrl/Makefile
index 3be71fb..dc4064c 100644
--- a/arch/arm/mach-uniphier/early-pinctrl/Makefile
+++ b/arch/arm/mach-uniphier/early-pinctrl/Makefile
@@ -2,4 +2,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3)	+= early-pinctrl-ph1-sld3.o
+obj-$(CONFIG_ARCH_UNIPHIER_SLD3)	+= early-pinctrl-sld3.o