mpdecision: don't use sleep, cancel/resume wq instead

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
mpdecision: checking every 100ms is enough

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
mpdecision: update copyright

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>