Add vold and keymint related services

These are for encrypting /data partition. Also vintf related xmls are
added for the services.

Bug: 185767624
Bug: 188013319
Test: boot microdroid
Change-Id: Ie511e2b4f3565fef181cc57588c2e107182f1961
diff --git a/microdroid/init.rc b/microdroid/init.rc
index 50f7389..68024e5 100644
--- a/microdroid/init.rc
+++ b/microdroid/init.rc
@@ -48,6 +48,9 @@
 
     start servicemanager
 
+    # TODO(b/185767624): remove hidl after full keymint support
+    start hwservicemanager
+
     start adbd
 
     # TODO(b/186396070) microdroid_manager starts zipfuse if necessary