[bootlin/training-materials] 57f0c7: sysdev: labs: add commands to clone Busybox

[Luca Ceresoli]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 57f0c7d9e131019c5e80afaf34a7c1b36eba1604
      https://github.com/bootlin/training-materials/commit/57f0c7d9e131019c5e80afaf34a7c1b36eba1604
  Author: Luca Ceresoli <luca.ceresoli at bootlin.com>
  Date:   2023-02-10 (Fri, 10 Feb 2023)

  Changed paths:
    M labs/sysdev-tinysystem/sysdev-tinysystem.tex

  Log Message:
  -----------
  sysdev: labs: add commands to clone Busybox

Not only this is the only program that has no 'git clone' instructions, it
also has an extremely slow website, that results in long delays and even
timeouts just to be able to find out the git or tarball URL.

Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>