V4L/DVB (11746): pvrusb2: Set ir_video autoloading to default disabled

This sets the disable_autoload_ir_video module option to being set,
which disables any attempt by the driver to autoload IR support.  This
changes preserves previous behavior, for now.  This change can be set
back concurrent with other changes that finally update i2c-kbd-i2c to
use the new i2c binding model.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>