common/fdt_support.c: Fix spelling of "shouldn't".
diff --git a/common/fdt_support.c b/common/fdt_support.c
index b2ba082..c6b93e7 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -1430,7 +1430,7 @@
 	node = parent;
 	parent = fdt_parent_offset(blob, node);
 	if (parent < 0) {
-		printf("Found dma-ranges in root node, shoudln't happen\n");
+		printf("Found dma-ranges in root node, shouldn't happen\n");
 		ret = -EINVAL;
 		goto out;
 	}