[bootlin/training-materials updates] master: slides/buildroot-tree: update to Buildroot 2021.02 (12421f20)

[Thomas Petazzoni]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/12421f207b5b07aa9b1f97bd656e84c55db71c93

>---------------------------------------------------------------

commit 12421f207b5b07aa9b1f97bd656e84c55db71c93
Author: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Date:   Thu May 6 23:10:50 2021 +0200

    slides/buildroot-tree: update to Buildroot 2021.02
    
    Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>


>---------------------------------------------------------------

12421f207b5b07aa9b1f97bd656e84c55db71c93
 slides/buildroot-tree/buildroot-tree.tex | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/slides/buildroot-tree/buildroot-tree.tex b/slides/buildroot-tree/buildroot-tree.tex
index bedb0c0a..687f1c2d 100644
--- a/slides/buildroot-tree/buildroot-tree.tex
+++ b/slides/buildroot-tree/buildroot-tree.tex
@@ -33,8 +33,8 @@
       \code{toolchain-buildroot} or \code{toolchain-external}
     \item \code{toolchain-buildroot/} virtual package to build the
       internal toolchain
-    \item \code{toolchain-external/} package to handle external
-      toolchains
+    \item \code{toolchain-external/} virtual package to
+      download/import the external toolchain
     \end{itemize}
   \item \code{system/}
     \begin{itemize}
@@ -53,7 +53,7 @@
   \begin{itemize}
   \item \code{package/}
     \begin{itemize}
-    \item all the user space packages (2500+)
+    \item all the user space packages (2800+)
     \item \code{busybox/}, \code{gcc/}, \code{qt5/}, etc.
     \item \code{pkg-generic.mk}, core package infrastructure
     \item \code{pkg-cmake.mk}, \code{pkg-autotools.mk},