V4L/DVB (8120): cx23885-417: Replace cx23885_do_ioctl to use video_ioctl2

Convert cx23885-417 to use video_ioctl2

Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>