drm/vboxvideo: Use the hotspot properties from cursor planes

jira VULN-136708
cve-bf CVE-2025-38449
commit-author Zack Rusin <zackr@vmware.com>
commit 44d877a

Atomic modesetting got support for mouse hotspots via the hotspot
properties. Port the legacy kms hotspot handling to the new properties
on cursor planes.

	Signed-off-by: Zack Rusin <zackr@vmware.com>
	Cc: Hans de Goede <hdegoede@redhat.com>
	Cc: David Airlie <airlied@linux.ie>
	Cc: Daniel Vetter <daniel@ffwll.ch>
	Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
	Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231023074613.41327-6-aesteve@redhat.com
(cherry picked from commit 44d877a)
	Signed-off-by: Roxana Nicolescu <rnicolescu@ciq.com>

Author: roxanan1996

drivers/gpu/drm/vboxvideo/vbox_mode.c

@@ -429,8 +429,8 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
 	flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
 		VBOX_MOUSE_POINTER_ALPHA;
 	hgsmi_update_pointer_shape(vbox->guest_pool, flags,
-				   min_t(u32, max(fb->hot_x, 0), width),
-				   min_t(u32, max(fb->hot_y, 0), height),
+				   min_t(u32, max(new_state->hotspot_x, 0), width),
+				   min_t(u32, max(new_state->hotspot_y, 0), height),
 				   width, height, vbox->cursor_data, data_size);
 
 	mutex_unlock(&vbox->hw_mutex);