[stable request 4.9.y][media] Add fix on saa7164

[Eduardo Valentin <eduval@xxxxxxxxxx>]

Greg,

Can you please add the following patch to the 4.9.y queue?
commit 6fb05e0dd32e566facb96ea61a48c7488daa5ac3
Author: Steven Toth <stoth@xxxxxxxxxxxxxx>
Date:   Tue Jun 6 09:30:27 2017 -0300

    [media] saa7164: fix double fetch PCIe access condition
    
    Avoid a double fetch by reusing the values from the prior transfer.
    
    Originally reported via https://bugzilla.kernel.org/show_bug.cgi?id=195559
    
    Thanks to Pengfei Wang <wpengfeinudt@xxxxxxxxx> for reporting.
    
    Signed-off-by: Steven Toth <stoth@xxxxxxxxxxxxxx>
    Reported-by: Pengfei Wang <wpengfeinudt@xxxxxxxxx>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>



-- 
All the best,
Eduardo Valentin