Pass serial device to VM to report failure reason.

Add DeathReason variants for various verification failure possibilities.

Bug: 220071963
Change-Id: I2b014fcd48fa571d9e2089fde09f8199955a9e7f
diff --git a/virtualizationservice/Android.bp b/virtualizationservice/Android.bp
index 981a041..9b2b740 100644
--- a/virtualizationservice/Android.bp
+++ b/virtualizationservice/Android.bp
@@ -34,6 +34,7 @@
         "liblog_rust",
         "libmicrodroid_metadata",
         "libmicrodroid_payload_config",
+        "libnix",
         "libonce_cell",
         "libregex",
         "librustutils",