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/memconf/Makefile b/arch/arm/mach-uniphier/memconf/Makefile
index a152f61..78bb677 100644
--- a/arch/arm/mach-uniphier/memconf/Makefile
+++ b/arch/arm/mach-uniphier/memconf/Makefile
@@ -3,6 +3,6 @@
 #
 
 obj-y					+= memconf.o
-obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD3)	+= memconf-ph1-sld3.o
-obj-$(CONFIG_ARCH_UNIPHIER_PROXSTREAM2)	+= memconf-proxstream2.o
-obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD6B)	+= memconf-proxstream2.o
+obj-$(CONFIG_ARCH_UNIPHIER_SLD3)	+= memconf-sld3.o
+obj-$(CONFIG_ARCH_UNIPHIER_PXS2)	+= memconf-pxs2.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD6B)	+= memconf-pxs2.o