xwm: Rename get_resources function

It's pure WM-related function, so use the same 'weston_wm_' prefix that others
in the same file are already using.

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
diff --git a/src/xwayland/window-manager.c b/src/xwayland/window-manager.c
index 1b2c0da..9f01c82 100644
--- a/src/xwayland/window-manager.c
+++ b/src/xwayland/window-manager.c
@@ -1249,7 +1249,7 @@
 }
 
 static void
-wxs_wm_get_resources(struct weston_wm *wm)
+weston_wm_get_resources(struct weston_wm *wm)
 {
 
 #define F(field) offsetof(struct weston_wm, field)
@@ -1471,7 +1471,7 @@
 				     weston_wm_handle_event, wm);
 	wl_event_source_check(wm->source);
 
-	wxs_wm_get_resources(wm);
+	weston_wm_get_resources(wm);
 
 	values[0] =
 		XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |