[bootlin/training-materials] b56c33: Embedded Linux: explain what happens with an initr...

[Michael Opdenacker]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: b56c33f72de6bd12b3184135bbf06955951e6a1e
      https://github.com/bootlin/training-materials/commit/b56c33f72de6bd12b3184135bbf06955951e6a1e
  Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
  Date:   2021-11-12 (Fri, 12 Nov 2021)

  Changed paths:
    M slides/boot-sequence-initramfs/initramfs-boot-sequence.dia

  Log Message:
  -----------
  Embedded Linux: explain what happens with an initramfs without /init

Update the "booting with initramfs" diagram.
Linux falls back to mounting the root device specified by root=
Tested on ARM on Linux 5.10

Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>