V4L/DVB (3448): Cx88-input.c: add IR remote control support to CX88_BOARD_PROLINK_PLAYTVPVR

This patch adds support for the IR remote control found in the card
CX88_BOARD_PROLINK_PLAYTVPVR.

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>