Pass -d to cpud -remote
Pass -d to cpud -remote

This lets you get debug info from cpud's child processes.  The info will
be outputted in the cpu client's stream.

Signed-off-by: Barret Rhoden <66a4aaafefe344f5385586b74770760469cbac80@google.com>

u-root/cpu,u-root/cpu,u-root/cpu