The rc-mm protocol can't be decoded by the mtk-cir since the de-glitch
filter removes pulses/spaces shorter than 294 microseconds.

Tested on a BananaPi R2.
Signed-off-by: Sean Young <sean@mess.org>
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>