V4L/DVB (4767): Make Remote control of the Pinnacle PCTV 310i work

The remote control works, but we still need a better keymap.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>