Add a stdout-path property so that automatic console selection works
in the absence of a "console=" parameter on the kernel command line.

Remove the now-superfluous "console=" parameter from chosen/bootargs.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>