libhidltransport: move methods to sources

Moved all methods with no templatization into sources.

Test: links
Bug: 35710429
Change-Id: I44bd6407e1bd74dd188b4033ddf176587ccdd8e7
diff --git a/transport/Android.bp b/transport/Android.bp
index 47a4de3..4e424be 100644
--- a/transport/Android.bp
+++ b/transport/Android.bp
@@ -59,6 +59,7 @@
     srcs: [
         "HidlBinderSupport.cpp",
         "HidlTransportSupport.cpp",
+        "HidlTransportUtils.cpp",
         "ServiceManagement.cpp",
         "Static.cpp"
     ],