Fix some more print() format errors.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/cm5200/fwupdate.c b/board/cm5200/fwupdate.c
index 19aa94a..5a27191 100644
--- a/board/cm5200/fwupdate.c
+++ b/board/cm5200/fwupdate.c
@@ -63,7 +63,7 @@
 	if (!bcmd)
 		return;
 
-	sprintf(ka, "%lx", LOAD_ADDR);
+	sprintf(ka, "%lx", (ulong)LOAD_ADDR);
 
 	/* prepare our bootargs */
 	rsargs = getenv("rs-args");