video: sh7760fb: fix to pass correct device identity to free_irq()

free_irq() expects the same device identity that was passed to
corresponding request_irq(), otherwise the IRQ is not freed.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/sh7760fb.c

@@ -567,7 +567,7 @@ static int sh7760fb_remove(struct platform_device *dev)
 	fb_dealloc_cmap(&info->cmap);
 	sh7760fb_free_mem(info);
 	if (par->irq >= 0)
-		free_irq(par->irq, par);
+		free_irq(par->irq, &par->vsync);
 	iounmap(par->base);
 	release_mem_region(par->ioarea->start, resource_size(par->ioarea));
 	framebuffer_release(info);