doc: Add musl-tools to instructions for build
As a first time user of cloud-hypervisor and Rust environment
you get build errors with out this.
@@ -27,7 +27,7 @@ distributions please replace the package manager and package name.
# Install basic packages needed. For a package list targeting for more
# functionalities for example the test, please see resources/Dockerfile.
$ sudo apt-get update
-$ sudo apt install git build-essential m4 bison flex uuid-dev qemu-utils
+$ sudo apt install git build-essential m4 bison flex uuid-dev qemu-utils musl-tools
# Install rust tool chain
$ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
# If you want to build statically linked binary please add musl target
