Configuring and building the kernel: minor improvements

- In particular, rephrased the example of dependencies.
  For me, it's more natural to say the "option B depends
  on option A", because option A should be selected first.

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

slides/sysdev-kernel-building/sysdev-kernel-building.tex

@@ -177,15 +177,16 @@ \subsection{Kernel configuration}
     stack to be enabled
   \item Two types of dependencies
     \begin{itemize}
-    \item \code{depends on} dependencies. In this case, option A that
-      depends on option B is not visible until option B is enabled
-    \item \code{select} dependencies. In this case, with option A
-      depending on option B, when option A is enabled, option B is
-      automatically enabled
+    \item \code{depends on} dependencies. In this case, option B that
+      depends on option A is not visible until option A is enabled
+    \item \code{select} dependencies. In this case, with option B
+      depending on option A, when option A is enabled, option B is
+      automatically enabled. In particular, such dependencies are
+      used to declare what features a hardware architecture supports.
     \end{itemize}
   \item With the \code{Show All Options} option, \code{make xconfig} allows
     to see all options, even the ones that cannot be selected because of
-    missing dependencies. Values for dependencies are shown. 
+    missing dependencies. Values for dependencies are shown.
   \end{itemize}
 \end{frame}
 
@@ -292,6 +293,8 @@ \subsection{Kernel configuration}
     \begin{itemize}
       \item A newer, similar text interface
       \item More user friendly (for example, easier to access help information).
+      \item However, lacking the shortcuts that \code{menuconfig} offers
+	in search results. Therefore, much less convenient than \code{menuconfig}.
       \item Required Debian packages: \code{libncurses-dev}
     \end{itemize}
     \column{0.5\textwidth}

slides/sysdev-linux-intro-modules/sysdev-linux-intro-modules.tex

@@ -144,7 +144,7 @@ \subsection{Using kernel modules}
   \frametitle{Useful reading}
   \begin{columns}
     \column{0.7\textwidth}
-    Linux Kernel in a Nutshell, Dec 2006
+    Linux Kernel in a Nutshell, Dec. 2006
     \begin{itemize}
     \item By Greg Kroah-Hartman, O'Reilly\\
       \url{http://www.kroah.com/lkn/}
@@ -154,7 +154,7 @@ \subsection{Using kernel modules}
       Great companion to the printed book for easy electronic searches!\\
       Available as single PDF file on
       \url{https://bootlin.com/community/kernel/lkn/}
-    \item Our rating: 2 stars
+    \item Getting old but still containing useful content.
     \end{itemize}
     \column{0.3\textwidth}
     \includegraphics[width=\textwidth]{slides/sysdev-linux-intro-modules/linux-kernel-in-a-nutshell.jpg}