debugging: slides: clarify debug_info absence reason on embedded systems

Fixes #153

Signed-off-by: Alexis Lothoré <[email protected]>

common/gdb.tex

@@ -152,10 +152,10 @@ \subsection{Remote debugging}
   \item In a non-embedded environment, debugging takes place using \code{gdb}
     or one of its front-ends.
   \item \code{gdb} has direct access to the binary and libraries compiled
-    with debugging symbols.
-  \item However, in an embedded context, the target platform
-    environment is often too limited to allow direct debugging with
-    \code{gdb} (2.4 MB on x86).
+    with debugging symbols, which is often false for embedded systems
+    (binaries are stripped, without debug\_info) to save storage space.
+  \item For the same reason, embedding the \code{gdb} program on embedded
+    targets is rarely desirable (2.4 MB on x86).
   \item Remote debugging is preferred
     \begin{itemize}
     \item \code{ARCH-linux-gdb} is used on the development workstation, offering