[Skiboot] [PATCH] external/mambo: fix tcl startup code for mambo bogus net (repost)

[Stewart Smith]

Aaron Sawdey <acsawdey at linux.ibm.com> writes:
> Repost of the same thing with Signed-off-by, and Acked-by from Michael Neuling.
>
> This fixes a couple issues with external/mambo/skiboot.tcl so I can use the
> mambo bogus net.
>  * newer distros (ubuntu 18.04) allow tap device to have a user specified
>    name instead of just tapN so we need to pass in a name not a number.
>  * need some kind of default for net_mac, and need the mconfig for it
>    to be set from an env var.

Merged to master as of 16aa1b111ed0183838acab7c295c198d344016a1
-- 
Stewart Smith
OPAL Architect, IBM.