V4L/DVB (3297): Add IR support to KWorld DVB-T (cx22702-based)

add IR support to KWorld DVB-T (cx22702-based)

Signed-off-by: Marco Manenti <marco_manenti@colman.it>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>