Add option to dump device tree blob in VM config

As part of adding tests for backwards compatibility check, dumping the
device tree will be essential in validating the state of the VM.

Bug: 360388014
Test: m
Change-Id: I1f0835590d1e668c1737abe58e1cb7163aa6759f
diff --git a/libs/libvmclient/src/lib.rs b/libs/libvmclient/src/lib.rs
index ce7d5a5..13630c0 100644
--- a/libs/libvmclient/src/lib.rs
+++ b/libs/libvmclient/src/lib.rs
@@ -208,14 +208,21 @@
         console_out: Option<File>,
         console_in: Option<File>,
         log: Option<File>,
+        dump_dt: Option<File>,
         callback: Option<Box<dyn VmCallback + Send + Sync>>,
     ) -> BinderResult<Self> {
         let console_out = console_out.map(ParcelFileDescriptor::new);
         let console_in = console_in.map(ParcelFileDescriptor::new);
         let log = log.map(ParcelFileDescriptor::new);
+        let dump_dt = dump_dt.map(ParcelFileDescriptor::new);
 
-        let vm =
-            service.createVm(config, console_out.as_ref(), console_in.as_ref(), log.as_ref())?;
+        let vm = service.createVm(
+            config,
+            console_out.as_ref(),
+            console_in.as_ref(),
+            log.as_ref(),
+            dump_dt.as_ref(),
+        )?;
 
         let cid = vm.getCid()?;