arm: clean cache management

unify arm cache management except for non standard cache as ARM7TDMI

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/B2.h b/include/configs/B2.h
index 01b65c5..35fad5c 100644
--- a/include/configs/B2.h
+++ b/include/configs/B2.h
@@ -38,6 +38,7 @@
 #define CONFIG_B2			1	/* on an B2 Board      */
 #define CONFIG_ARM_THUMB	1	/* this is an ARM7TDMI */
 #undef  CONFIG_ARM7_REVD		/* disable ARM720 REV.D Workarounds */
+#define CONFIG_SYS_NO_CP15_CACHE
 
 #define CONFIG_S3C44B0_CLOCK_SPEED	75 /* we have a 75Mhz S3C44B0*/