arch: vmm: Move ACPI tables creation to vmm crate

Remove ACPI table creation from arch crate to the vmm crate simplifying
arch::configure_system()

GuestAddress(0) is used to mean no RSDP table rather than adding
complexity with a conditional argument or an Option type as it will
evaluate to a zero value which would be the default anyway.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/src/lib.rs

@@ -30,6 +30,9 @@ pub mod config;
 pub mod device_manager;
 pub mod vm;
 
+#[cfg(feature = "acpi")]
+mod acpi;
+
 /// Errors associated with VMM management
 #[derive(Debug)]
 #[allow(clippy::large_enum_variant)]