ARM: uniphier: move (and rename) CONFIG_UNIPHIER_L2CACHE_ON to Kconfig

Move this option to Kconfig, renaming it into CONFIG_CACHE_UNIPHIER.
The new option name makes sense enough, and the same as Linux has.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/mach-uniphier/Kconfig

@@ -70,6 +70,13 @@ config ARCH_UNIPHIER_LD6B
 	depends on ARCH_UNIPHIER_PRO5_PXS2_LD6B
 	default y
 
+config CACHE_UNIPHIER
+	bool "Enable the UniPhier L2 cache controller"
+	depends on ARCH_UNIPHIER_32BIT
+	default y
+	help
+	  This option allows to use the UniPhier System Cache as L2 cache.
+
 config MICRO_SUPPORT_CARD
 	bool "Use Micro Support Card"
 	help

arch/arm/mach-uniphier/arm32/cache-uniphier.c

@@ -206,7 +206,7 @@ void uniphier_cache_disable(void)
 	uniphier_cache_endisable(0);
 }
 
-#ifdef CONFIG_UNIPHIER_L2CACHE_ON
+#ifdef CONFIG_CACHE_UNIPHIER
 void v7_outer_cache_flush_all(void)
 {
 	uniphier_cache_maint_all(UNIPHIER_SSCOQM_CM_FLUSH);

include/configs/uniphier.h

@@ -27,9 +27,6 @@
 
 #define CONFIG_SYS_CACHELINE_SIZE	32
 
-/* Comment out the following to disable L2 cache */
-#define CONFIG_UNIPHIER_L2CACHE_ON
-
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
 #define CONFIG_MISC_INIT_F