V4L/DVB (5883): V4L: Fix a compile warning on non-32-bit machines.

Fix a compile warning on non-32-bit machines in v4l2-int-device.h.
Add internal ioctl interface fallback function for ioctls with one
argument.

Signed-off-by: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

include/media/v4l2-int-device.h

@@ -170,7 +170,7 @@ int v4l2_int_ioctl_1(struct v4l2_int_device *d, int cmd, void *arg);
 					    arg_type asterisk arg)	\
 	{								\
 		return v4l2_int_ioctl_1(d, vidioc_int_##name##_num,	\
-					(void *)arg);			\
+					(void *)(unsigned long)arg);	\
 	}								\
 									\
 	static inline struct v4l2_int_ioctl_desc			\