By default the driver always configure the mode as 8s1 even when 8m1 mode is
selected. Fix this by adding support to control the space/mark bit.
Signed-off-by: NBhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>