UART3 wakeup takes place with iodaisy chain. enable the wakeup pin.
Reported-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
[tony@atomide.com: tabify uart pins properly while at it]
Signed-off-by: Tony Lindgren <tony@atomide.com>