V4L/DVB: dvb-usb: prepare drivers for using rc-core

This is a big patch, yet trivial. It just move the RC properties
to a separate struct, in order to prepare the dvb-usb drivers to
use rc-core. There's no change on the behavior of the drivers.

With this change, it is possible to have both legacy and rc-core
based code inside the dvb-usb-remote, allowing a gradual migration
to rc-core, driver per driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --cc drivers/media/dvb/dvb-usb/a800.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/af9005.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/af9015.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/anysee.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/az6027.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/cinergyT2-core.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/cxusb.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dib0700_core.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dib0700_devices.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dibusb-mb.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dibusb-mc.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/digitv.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dtt200u.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dvb-usb-remote.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dvb-usb.h
Simple merge

diff --cc drivers/media/dvb/dvb-usb/dw2102.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/m920x.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/nova-t-usb2.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/opera1.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/vp702x.c
Simple merge

diff --cc drivers/media/dvb/dvb-usb/vp7045.c
Simple merge