[LSC] Add LOCAL_LICENSE_KINDS to system/update_engine

Added SPDX-license-identifier-Apache-2.0 to:
  Android.bp
  stable/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I00a538119e8d043812779dfb7a911347c6526cb6
diff --git a/stable/Android.bp b/stable/Android.bp
index 95188e4..5e54e9a 100644
--- a/stable/Android.bp
+++ b/stable/Android.bp
@@ -16,6 +16,15 @@
 
 // Stable AIDL interface between update_engine and other APEXes
 // ========================================================
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "system_update_engine_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["system_update_engine_license"],
+}
+
 aidl_interface {
     name: "libupdate_engine_stable",