[bootlin/training-materials] 59ddf3: labs/buildroot-basic-stm32: fix SPL location

[Thomas Petazzoni]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 59ddf3c95a9a413d4e3a2ee57d846fc57dd056bf
      https://github.com/bootlin/training-materials/commit/59ddf3c95a9a413d4e3a2ee57d846fc57dd056bf
  Author: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
  Date:   2023-01-17 (Tue, 17 Jan 2023)

  Changed paths:
    M labs/buildroot-basic-stm32/buildroot-basic-stm32.tex

  Log Message:
  -----------
  labs/buildroot-basic-stm32: fix SPL location

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>