Merge "Add socat apt package for kshell"

install-prereqs.sh

diff --git a/install-prereqs.sh b/install-prereqs.sh
index e5d9e13..4b56786 100755
--- a/install-prereqs.sh
+++ b/install-prereqs.sh
@@ -86,6 +86,7 @@
     python3-pip
     python3-venv
     rsync
+    socat
     srecord
     texinfo
     texlive-bibtex-extra