Add boot time benchmark for Microdroid VM with vendor partition

Also move the isFeatureEnabled/assumeFeatureEnabled helper functions to
MicrodroidDeviceTestBase.java to reuse them in MicrodroidBenchmarks.java

Bug: 285855439
Test: atest MicrodroidBenchmarks
Change-Id: I5755648c9e5a5a75e33ba83f6d50c576c04047bc
diff --git a/tests/benchmark/Android.bp b/tests/benchmark/Android.bp
index 90ba575..80fdff7 100644
--- a/tests/benchmark/Android.bp
+++ b/tests/benchmark/Android.bp
@@ -28,6 +28,7 @@
     compile_multilib: "64",
     required: ["perf-setup"],
     host_required: ["MicrodroidTestPreparer"],
+    data: [":test_microdroid_vendor_image"],
 }
 
 cc_library_shared {