Add external/vm_tools/p9 to rust allowed paths

Change-Id: Ifccb7b94a6655524b99d669168c54cf93eed5f89
diff --git a/rust/config/allowed_list.go b/rust/config/allowed_list.go
index cbdbe23..b5c70dc 100644
--- a/rust/config/allowed_list.go
+++ b/rust/config/allowed_list.go
@@ -10,6 +10,7 @@
 		"external/crosvm",
 		"external/minijail",
 		"external/rust",
+		"external/vm_tools/p9",
 		"frameworks/native/libs/binder/rust",
 		"packages/modules/Virtualization",
 		"prebuilts/rust",