Add VTS for get/setPreferredNetworkBitmap

Bug: 121345980
Test: make vts -j32
Change-Id: I94b48f974e7244e1acbace26af8c00e05bee28e1
diff --git a/radio/1.4/vts/functional/radio_response.cpp b/radio/1.4/vts/functional/radio_response.cpp
index 10ecead..6e9cd43 100644
--- a/radio/1.4/vts/functional/radio_response.cpp
+++ b/radio/1.4/vts/functional/radio_response.cpp
@@ -776,7 +776,6 @@
 
 Return<void> RadioResponse_v1_4::enableModemResponse(const RadioResponseInfo& info) {
     rspInfo = info;
-    enableModemResponseToggle = !enableModemResponseToggle;
     parent_v1_4.notify(info.serial);
     return Void();
 }
@@ -832,9 +831,9 @@
 Return<void> RadioResponse_v1_4::getPreferredNetworkTypeBitmapResponse(
         const RadioResponseInfo& info, const ::android::hardware::hidl_bitfield<
                                                ::android::hardware::radio::V1_4::RadioAccessFamily>
-        /*networkTypeBitmap*/) {
+                                               networkTypeBitmap) {
     rspInfo = info;
-    // TODO: may need a new member for bitfield networkTypeBitmap.
+    networkTypeBitmapResponse = networkTypeBitmap;
     parent_v1_4.notify(info.serial);
     return Void();
 }