arc: Migrate ARC_MMU_VER to Kconfig

Move this value to Kconfig.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 1a7c525..6ae66bb 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -102,6 +102,13 @@
 
 endchoice
 
+config ARC_MMU_VER
+	int
+	default 0 if ARC_MMU_ABSENT
+	default 2 if ARC_MMU_V2
+	default 3 if ARC_MMU_V3
+	default 4 if ARC_MMU_V4
+
 config CPU_BIG_ENDIAN
 	bool "Enable Big Endian Mode"
 	help
diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h
index a48e1ae..74cff71 100644
--- a/arch/arc/include/asm/cache.h
+++ b/arch/arc/include/asm/cache.h
@@ -16,16 +16,6 @@
  */
 #define ARCH_DMA_MINALIGN	128
 
-#if defined(ARC_MMU_ABSENT)
-#define CONFIG_ARC_MMU_VER 0
-#elif defined(CONFIG_ARC_MMU_V2)
-#define CONFIG_ARC_MMU_VER 2
-#elif defined(CONFIG_ARC_MMU_V3)
-#define CONFIG_ARC_MMU_VER 3
-#elif defined(CONFIG_ARC_MMU_V4)
-#define CONFIG_ARC_MMU_VER 4
-#endif
-
 #ifndef __ASSEMBLY__
 
 void cache_init(void);