microblaze: Fix printf() format issues

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/common/cmd_bdinfo.c b/common/cmd_bdinfo.c
index caa467d..24ff9b9 100644
--- a/common/cmd_bdinfo.c
+++ b/common/cmd_bdinfo.c
@@ -205,7 +205,7 @@
 	puts ("\nip_addr     = ");
 	print_IPaddr (bd->bi_ip_addr);
 #endif
-	printf ("\nbaudrate    = %d bps\n", (ulong)bd->bi_baudrate);
+	printf ("\nbaudrate    = %ld bps\n", (ulong)bd->bi_baudrate);
 	return 0;
 }