armv7: rename cache related CONFIG flags

Replace the cache related CONFIG flags with more meaningful
names. Following are the changes:

CONFIG_L2_OFF	     -> CONFIG_SYS_L2CACHE_OFF
CONFIG_SYS_NO_ICACHE -> CONFIG_SYS_ICACHE_OFF
CONFIG_SYS_NO_DCACHE -> CONFIG_SYS_DCACHE_OFF

Signed-off-by: Aneesh V <aneesh@ti.com>
V2:
 * Changed CONFIG_L2_OFF -> CONFIG_SYS_NO_L2CACHE
V4:
 * Changed all three flags to the final names suggested as above
   and accordingly changed the commit message
diff --git a/board/armltd/integrator/split_by_variant.sh b/board/armltd/integrator/split_by_variant.sh
index d869dd2..19fc832 100755
--- a/board/armltd/integrator/split_by_variant.sh
+++ b/board/armltd/integrator/split_by_variant.sh
@@ -103,16 +103,16 @@
 #undef CONFIG_CM_INIT  /* CM may not have initialization reg */
 #undef CONFIG_CM_TCRAM /* CM may not have TCRAM */
 /* May not be processor without cache support */
-#define CONFIG_SYS_NO_ICACHE 1
-#define CONFIG_SYS_NO_DCACHE 1
+#define CONFIG_SYS_ICACHE_OFF 1
+#define CONFIG_SYS_DCACHE_OFF 1
 _EOF
 	;;
 
 	arm720t)
 	cat >> ${config_file} << _EOF
 /* May not be processor without cache support */
-#define CONFIG_SYS_NO_ICACHE 1
-#define CONFIG_SYS_NO_DCACHE 1
+#define CONFIG_SYS_ICACHE_OFF 1
+#define CONFIG_SYS_DCACHE_OFF 1
 _EOF
 	;;
 esac