[U-Boot] [PATCH 2/2] serial: Make nulldev a serial device

[Marek Vasut]

Dear Joe Hershberger,

> This allows the default console to be specified as the nulldev.  This is
> specifically helpful when the real serial console's init() cannot run
> early in the boot process.  When the init can be run, then the console
> can be switched to the real device using the std* env vars.
> 
> Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>


Isn't it actually better to have null stdio device? Some systems might not even 
use serial port (and so null serial will be useless on these systems)!

[...]

Best regards,
Marek Vasut