rust: add PL011 device model

This commit adds a re-implementation of hw/char/pl011.c in Rust.

How to build:

1. Configure a QEMU build with:
   --enable-system --target-list=aarch64-softmmu --enable-rust
2. Launching a VM with qemu-system-aarch64 should use the Rust version
   of the pl011 device

Co-authored-by: Junjie Mao <junjie.mao@intel.com>
Co-authored-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/6ec1d4fb8db2a1d7ba94c73e65d9770371b7857d.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

scripts/archive-source.sh

@@ -27,7 +27,9 @@ sub_file="${sub_tdir}/submodule.tar"
 # in their checkout, because the build environment is completely
 # different to the host OS.
 subprojects="keycodemapdb libvfio-user berkeley-softfloat-3
-  berkeley-testfloat-3 proc-macro2-1-rs quote-1-rs
+  berkeley-testfloat-3 arbitrary-int-1-rs bilge-0.2-rs
+  bilge-impl-0.2-rs either-1-rs itertools-0.11-rs proc-macro2-1-rs
+  proc-macro-error-1-rs proc-macro-error-attr-1-rs quote-1-rs
   syn-2-rs unicode-ident-1-rs"
 sub_deinit=""
 

scripts/make-release

@@ -18,7 +18,9 @@ fi
 
 # Only include wraps that are invoked with subproject()
 SUBPROJECTS="libvfio-user keycodemapdb berkeley-softfloat-3
-  berkeley-testfloat-3 proc-macro2-1-rs quote-1-rs
+  berkeley-testfloat-3 arbitrary-int-1-rs bilge-0.2-rs
+  bilge-impl-0.2-rs either-1-rs itertools-0.11-rs proc-macro2-1-rs
+  proc-macro-error-1-rs proc-macro-error-attr-1-rs quote-1-rs
   syn-2-rs unicode-ident-1-rs"
 
 src="$1"

scripts/rust/rust_root_crate.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -eu
+
+cat <<EOF
+// @generated
+// This file is autogenerated by scripts/rust_root_crate.sh
+
+EOF
+
+for crate in $*; do
+    echo "extern crate $crate;"
+done