wined3d: Add D3DFMT_L16.
diff --git a/include/d3d9types.h b/include/d3d9types.h
index be3f947..3c4b8a1 100644
--- a/include/d3d9types.h
+++ b/include/d3d9types.h
@@ -816,6 +816,7 @@
     D3DFMT_D24X8                =  77,
     D3DFMT_D24X4S4              =  79,
     D3DFMT_D16                  =  80,
+    D3DFMT_L16                  =  81,
     D3DFMT_D32F_LOCKABLE        =  82,
     D3DFMT_D24FS8               =  83,