configs/chiliboard: remove explicit getty port
Using default value (console) works well, so there is no reason to set
tty explicitly. Additionally after selecting newer kernels (tested
with 4.19 and 4.20-rc3) ttyO0 no longer works due to missing device
node.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>