The Asus PN50 has 16 byte io region for the ITE8708 in its DSDT, which
causes the probe fail. So, accept larger regions.

Link: https://www.spinics.net/lists/linux-media/msg177725.html

Cc: Nikolaos Beredimas <beredim@gmail.com>
Reported-by: NMichael Zimmermann <sigmaepsilon92@gmail.com>
Signed-off-by: NSean Young <sean@mess.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>