loadb: get console baudrate from class_dev not dev
With this fix its possible to run loadb -f /dev/ram0
again with the latest next patchstack. Without you will
run into data_abort. Tested with omap3530 beagleboard.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>