[bootlin/training-materials] 020948: Kernel slides: remove .c from drivers to harmonize

[Clément Léger]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 020948b4fb3e21e821086398a139cb9f9e80993a
      https://github.com/bootlin/training-materials/commit/020948b4fb3e21e821086398a139cb9f9e80993a
  Author: Clément Léger <clement.leger at bootlin.com>
  Date:   2021-11-12 (Fri, 12 Nov 2021)

  Changed paths:
    M slides/kernel-device-model/usb-bus-hardware.dia

  Log Message:
  -----------
  Kernel slides: remove .c from drivers to harmonize

Signed-off-by: Clément Léger <clement.leger at bootlin.com>