hypervisor: mshv: Add x86_64 module

Add x86_64 specific definitions as we only plan
to support x86_64 for the moment.

Signed-off-by: Muminul Islam <muislam@microsoft.com>

hypervisor/src/mshv/mod.rs

@@ -8,3 +8,7 @@
 #![allow(unused_variables)]
 #![allow(unused_macros)]
 #![allow(non_upper_case_globals)]
+
+// x86_64 dependencies
+#[cfg(target_arch = "x86_64")]
+pub mod x86_64;