V4L/DVB (8609): media: Clean up platform_driver_unregister() bogosity.

So, platform_driver_unregister() doesn't actually have a return value,
nor do any of the void __exit routines. It's reassuring to know that
people copy and paste blindly. This completely blew up my compiler.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/pxa_camera.c

@@ -1198,7 +1198,7 @@ static int __devinit pxa_camera_init(void)
 
 static void __exit pxa_camera_exit(void)
 {
-	return platform_driver_unregister(&pxa_camera_driver);
+	platform_driver_unregister(&pxa_camera_driver);
 }
 
 module_init(pxa_camera_init);

drivers/media/video/sh_mobile_ceu_camera.c

@@ -647,7 +647,7 @@ static int __init sh_mobile_ceu_init(void)
 
 static void __exit sh_mobile_ceu_exit(void)
 {
-	return platform_driver_unregister(&sh_mobile_ceu_driver);
+	platform_driver_unregister(&sh_mobile_ceu_driver);
 }
 
 module_init(sh_mobile_ceu_init);

drivers/media/video/soc_camera_platform.c

@@ -187,7 +187,7 @@ static int __init soc_camera_platform_module_init(void)
 
 static void __exit soc_camera_platform_module_exit(void)
 {
-	return platform_driver_unregister(&soc_camera_platform_driver);
+	platform_driver_unregister(&soc_camera_platform_driver);
 }
 
 module_init(soc_camera_platform_module_init);