V4L/DVB (11559): Siano: add support for infra-red (IR) controllers

This patch add support for IR (infra-red)
remote controllers.
Further commits are needed in order to enable the
activation of the IR components.

Signed-off-by: Uri Shkolnik <uris@siano-ms.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>