[media] cx23885: use core locking, switch to unlocked_ioctl

Enable core locking which allows us to safely switch to unlocked_ioctl.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --cc drivers/media/pci/cx23885/cx23885-417.c
Simple merge

diff --cc drivers/media/pci/cx23885/cx23885-video.c
Simple merge