[media] Use a more consistent value for RC repeat period

The default REP_PERIOD is 33 ms. This doesn't make sense for IR's,
as, in general, an IR repeat scancode is provided at every 110/115ms,
depending on the RC protocol. So, increase its default, to do a
better job avoiding ghost repeat events.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Jarod Wilson <jarod@redhat.com>