add new CONFIG_AT91_LEGACY

* add's the new temporary CONFIG_AT91_LEGACY to all board configs
 This will need for backward compatiblity, while change the SoC access
 to c structures. If CONFIG_AT91_LEGACY is defined, the deprecated
 SoC is used.

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
diff --git a/include/configs/csb637.h b/include/configs/csb637.h
index 689e7f0..efa2780 100644
--- a/include/configs/csb637.h
+++ b/include/configs/csb637.h
@@ -26,6 +26,8 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
+#define CONFIG_AT91_LEGACY
+
 /* ARM asynchronous clock */
 #define AT91C_MAIN_CLOCK	184320000	/* from 3.6864 MHz crystal (3686400 * 50) */
 #define AT91C_MASTER_CLOCK	46080000	/* (AT91C_MAIN_CLOCK/4)	peripheral clock */