Commits on Jun 21, 2017

1. mxgrub: Tell Linux to log to serial console …

   To debug Linux kernel double crashes for the MXQ servers, they are now
   connected over serial console.
   
   As the Dell firmware, and GRUB use BIOS calls to print messages, these
   are already transmitted over serial console thanks to some Dell BIOS
   magic.
   
   But, luckily, the Linux kernel doesn’t do that. So Linux has to be told
   to write messages to the serial console.
   
   Omitting the `console=tty0` would cause no Linux messages to be printed
   to the VGA connection, which we use for the KVMs, so add that too.

   

   donald authored and pmenzel committed Jun 21, 2017
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