disp: msm: sde: send event on trusted vm transition

This change sends a notification to user mode after msm_drm
driver releases the mmio and irq resources on trusted vm transition
request. This is required as user mode has no other way to know
when the resources where actually released. User mode driver earlier
relied on retire fence signaling but retire fences are send before
releasing the hw.

Change-Id: Ia218cfcbf398b2de1ad9578fb9baedf348b067df
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>

msm/sde/sde_crtc.h

@@ -1063,4 +1063,9 @@ void sde_crtc_cancel_delayed_work(struct drm_crtc *crtc);
  */
 struct drm_encoder *sde_crtc_get_src_encoder_of_clone(struct drm_crtc *crtc);
 
+/*
+ * _sde_crtc_vm_release_notify- send event to usermode on vm release
+ */
+void _sde_crtc_vm_release_notify(struct drm_crtc *crtc);
+
 #endif /* _SDE_CRTC_H_ */