virtio-msg: link virtio-msg content

Add the new transport layer into the content table

Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Signed-off-by: Bill Mills <bill.mills@linaro.org>

Author: wmamills

content.tex

@@ -693,6 +693,7 @@ \chapter{Virtio Transport Options}\label{sec:Virtio Transport Options}
 \input{transport-pci.tex}
 \input{transport-mmio.tex}
 \input{transport-ccw.tex}
+\input{transport-msg.tex}
 
 \chapter{Device Types}\label{sec:Device Types}