weston: update position for subsurface [1/1]

PD#SWPL-179736

Problem:
position change fail

Solution:
update postion of subsurface

Verify:
ah212

Change-Id: Iac00f6887b73463f1fc569b76495440dfa8a24c2
Signed-off-by: limin.tian <limin.tian@amlogic.com>
diff --git a/libweston/compositor.c b/libweston/compositor.c
index 5686804..c8a2a6c 100644
--- a/libweston/compositor.c
+++ b/libweston/compositor.c
@@ -2783,6 +2783,7 @@
 	}
 
 	view->parent_view = parent;
+	weston_update_subsurface_position(sub, view);
 	weston_view_update_transform(view);
 	view->is_mapped = true;
 	pnode = view_ensure_paint_node(view, output);