spl: Set SPL_FIT_FOUND for full FIT also

This flag is set for simple FIT, so set it for full FIT too.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index 2a097f4..527a569 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -941,6 +941,7 @@
 		if (ret < 0)
 			return ret;
 	}
+	spl_image->flags |= SPL_FIT_FOUND;
 
 	return 0;
 }