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/logodl.h b/include/configs/logodl.h
index 9afa800..889a9a3 100644
--- a/include/configs/logodl.h
+++ b/include/configs/logodl.h
@@ -39,6 +39,10 @@
 
 #undef CONFIG_USE_IRQ			/* we don't need IRQ/FIQ stuff      */
 					/* for timer/console/ethernet       */
+
+/* we will never enable dcache, because we have to setup MMU first */
+#define CONFIG_SYS_NO_DCACHE
+
 /*
  * Hardware drivers
  */