drm/gma500: Uninstall interrupts on driver removal

Reloading the driver revealed that the interrupt handler never got
uninstalled.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220322131742.11566-2-patrik.r.jakobsson@gmail.com

drivers/gpu/drm/gma500/psb_drv.c

@@ -173,6 +173,8 @@ static void psb_driver_unload(struct drm_device *dev)
 		gma_backlight_exit(dev);
 	psb_modeset_cleanup(dev);
 
+	gma_irq_uninstall(dev);
+
 	if (dev_priv->ops->chip_teardown)
 		dev_priv->ops->chip_teardown(dev);