@1.2::IServiceManager: client callback

For lazy HALs.

Bug: 66921961
Test: hidl_test
Change-Id: I253180a6a88e06ba825e679302fff5f5b9eec653
diff --git a/transport/manager/1.2/Android.bp b/transport/manager/1.2/Android.bp
index 564fb8a..3f02f78 100644
--- a/transport/manager/1.2/Android.bp
+++ b/transport/manager/1.2/Android.bp
@@ -7,6 +7,7 @@
         enabled: true,
     },
     srcs: [
+        "IClientCallback.hal",
         "IServiceManager.hal",
     ],
     interfaces: [