ARM: uniphier: rename CONFIG_MACH_* to CONFIG_ARCH_UNIPHIER_*

I want these prefixed with CONFIG_ARCH_UNIPHIER_ to clarify
they belong to UniPhier SoC family.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/Kconfig b/arch/arm/mach-uniphier/Kconfig
index 28d574f..d7a19c6 100644
--- a/arch/arm/mach-uniphier/Kconfig
+++ b/arch/arm/mach-uniphier/Kconfig
@@ -8,20 +8,20 @@
 
 choice
 	prompt "UniPhier SoC select"
-	default MACH_PH1_PRO4
+	default ARCH_UNIPHIER_PH1_PRO4
 
-config MACH_PH1_SLD3
+config ARCH_UNIPHIER_PH1_SLD3
 	bool "PH1-sLD3"
 	select UNIPHIER_SMP
 
-config MACH_PH1_LD4
+config ARCH_UNIPHIER_PH1_LD4
 	bool "PH1-LD4"
 
-config MACH_PH1_PRO4
+config ARCH_UNIPHIER_PH1_PRO4
 	bool "PH1-Pro4"
 	select UNIPHIER_SMP
 
-config MACH_PH1_SLD8
+config ARCH_UNIPHIER_PH1_SLD8
 	bool "PH1-sLD8"
 
 endchoice
@@ -53,11 +53,11 @@
 
 config DDR_FREQ_1600
 	bool "DDR3 1600"
-	depends on MACH_PH1_SLD3 || MACH_PH1_LD4 || MACH_PH1_PRO4
+	depends on ARCH_UNIPHIER_PH1_SLD3 || ARCH_UNIPHIER_PH1_LD4 || ARCH_UNIPHIER_PH1_PRO4
 
 config DDR_FREQ_1333
 	bool "DDR3 1333"
-	depends on MACH_PH1_SLD3 || MACH_PH1_LD4 || MACH_PH1_SLD8
+	depends on ARCH_UNIPHIER_PH1_SLD3 || ARCH_UNIPHIER_PH1_LD4 || ARCH_UNIPHIER_PH1_SLD8
 
 endchoice