boot_control: Define the boot_control HIDL interface.

Bug: 31864052
Merged-In: I9222b140ff51c4d3846b86b03719e2c8e9b7fe47
Change-Id: I9222b140ff51c4d3846b86b03719e2c8e9b7fe47
diff --git a/Android.bp b/Android.bp
index 2c113d5..85ab629 100644
--- a/Android.bp
+++ b/Android.bp
@@ -2,6 +2,8 @@
 subdirs = [
     "benchmarks/msgq/1.0",
     "bluetooth/1.0",
+    "boot/1.0",
+    "boot/1.0/default",
     "nfc/1.0",
     "nfc/1.0/default",
     "radio/1.0",