v4l: Improve readability by not wrapping ioctl number #define's

Wrapping the #define's at a 80 columns boundary just obfuscates the
code. Don't do that.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>