slides: yocto: update kirkstone references to scarthgap

* Update the references when relevant.
* The linux4sam link is valid and still has an anonymous function.

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>

labs/yocto-first-build-beagleplay/yocto-first-build-beagleplay.tex

@@ -26,7 +26,7 @@ \section{Setup}
 
 \section{Download Yocto}
 
-Download the \code{kirkstone} version of Poky:
+Download the \code{scarthgap} version of Poky:
 \begin{bashinput}
 git clone https://git.yoctoproject.org/git/poky
 cd $HOME/__SESSION_NAME__-labs/poky

labs/yocto-first-build-stm32/yocto-first-build-stm32.tex

@@ -26,7 +26,7 @@ \section{Setup}
 
 \section{Download Yocto}
 
-Download the \code{kirkstone} version of Poky:
+Download the \code{scarthgap} version of Poky:
 \begin{bashinput}
 git clone https://git.yoctoproject.org/git/poky
 cd $HOME/__SESSION_NAME__-labs/poky

labs/yocto-first-build/yocto-first-build.tex

@@ -26,7 +26,7 @@ \section{Setup}
 
 \section{Download Yocto}
 
-Download the \code{kirkstone} version of Poky:
+Download the \code{scarthgap} version of Poky:
 \begin{bashinput}
 git clone https://git.yoctoproject.org/git/poky
 cd $HOME/__SESSION_NAME__-labs/poky

slides/yocto-layer-management/yocto-layer-management.tex

@@ -45,7 +45,7 @@ \section{Automating layer management}
   <remote name="yocto-project" fetch="git.yoctoproject.org" />
   <remote name="private" fetch="git.example.net" />
 
-  <default revision="kirkstone" remote="private" />
+  <default revision="scarthgap" remote="private" />
 
   <project name="poky" remote="yocto-project" />
   <project name="meta-ti" remote="yocto-project" />
@@ -121,7 +121,7 @@ \section{Automating layer management}
 
   openembedded-core:
     url: "https://git.openembedded.org/openembedded-core"
-    branch: kirkstone
+    branch: scarthgap
     layers:
       meta:
   \end{minted}
@@ -135,11 +135,11 @@ \section{Automating layer management}
   \begin{minted}{yaml}
   meta-freescale:
     url: "https://github.com/Freescale/meta-freescale"
-    branch: kirkstone
+    branch: scarthgap
 
   meta-openembedded:
    url: https://git.openembedded.org/meta-openembedded
-   branch: kirkstone
+   branch: scarthgap
    layers:
      meta-oe:
      meta-python:

slides/yocto-overview/yocto-overview.tex

@@ -155,7 +155,7 @@ \subsection{The Poky reference system overview}
           }
     \item A new version is released every 6 months, and maintained for 7 months
     \item \textbf{LTS} versions are maintained for 4 years, and announced before their release.
-    \item Each release has a codename such as \code{kirkstone} or \code{honister},
+    \item Each release has a codename such as \code{kirkstone} or \code{scarthgap},
 	  corresponding to a release number.
 		  \begin{itemize}
 			  \item A summary can be found at \url{https://wiki.yoctoproject.org/wiki/Releases}

slides/yocto-recipe-extra/yocto-recipe-extra.tex

@@ -163,7 +163,7 @@ \subsection{Using Python code in metadata}
   \end{minted}
 Real life example of anonymous function:
 \footnotesize
-\url{https://github.com/linux4sam/meta-atmel/blob/kirkstone/recipes-kernel/linux/linux.inc}
+\url{https://github.com/linux4sam/meta-atmel/blob/scarthgap/recipes-kernel/linux/linux.inc}
 \end{frame}
 
 \subsection{Variable flags}