[bootlin/training-materials] beb102: Boot time slides: misc updates

[Michael Opdenacker]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: beb102783fcdef0dfbc74d2778349c22d02866e7
      https://github.com/bootlin/training-materials/commit/beb102783fcdef0dfbc74d2778349c22d02866e7
  Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
  Date:   2022-05-03 (Tue, 03 May 2022)

  Changed paths:
    M mk/boot-time.mk
    R slides/boot-time-bootloader-lab/boot-time-bootloader-lab.tex
    M slides/boot-time-conclusions/best-techniques.svg
    M slides/boot-time-kernel/boot-time-kernel.tex
    M slides/boot-time-u-boot-falcon-mode/boot-time-u-boot-falcon-mode.tex

  Log Message:
  -----------
  Boot time slides: misc updates

- Fix descriptions of labs
- Fix Falcon mode savings on BeagleBone Black, better than before

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