Set HAL response functions after framework sets all of theirs.

Bug: 207695009
Test: Build with ag/16322062 and a handful of patches from b/207695009,
      try to use telephony stack
Change-Id: I74afe105a22a24efa0c38de20c75beffc58b144f
diff --git a/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp b/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp
index 3fff5ee..d28b940 100644
--- a/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp
+++ b/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp
@@ -28,7 +28,7 @@
 constexpr auto ok = &ScopedAStatus::ok;
 
 std::shared_ptr<aidl::IRadioModemResponse> RadioModem::respond() {
-    return mRadioResponse->modemCb();
+    return mCallbackManager->response().modemCb();
 }
 
 ScopedAStatus RadioModem::enableModem(int32_t serial, bool on) {
@@ -133,16 +133,10 @@
 }
 
 ScopedAStatus RadioModem::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioModemResponse>& modemResponse,
-        const std::shared_ptr<aidl::IRadioModemIndication>& modemIndication) {
-    LOG_CALL << modemResponse << ' ' << modemIndication;
-
-    CHECK(modemResponse);
-    CHECK(modemIndication);
-
-    mRadioResponse->setResponseFunction(modemResponse);
-    mRadioIndication->setResponseFunction(modemIndication);
-
+        const std::shared_ptr<aidl::IRadioModemResponse>& response,
+        const std::shared_ptr<aidl::IRadioModemIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }