HwBinder: don't rely on kernel headers.

Kernel headers are no longer exported from libhwbinder, rely on the API
it exports instead (IBinder::FLAG_ONEWAY instead of TF_ONEWAY).

Bug: 124524556
Test: automated boot test is sufficient
Change-Id: I4d040dbde32d25c21437e06fa805eb0f10c43532

core/jni/android_os_HwBinder.cpp

@@ -152,7 +152,7 @@ status_t JHwBinder::onTransact(
         uint32_t flags,
         TransactCallback callback) {
     JNIEnv *env = AndroidRuntime::getJNIEnv();
-    bool isOneway = (flags & TF_ONE_WAY) != 0;
+    bool isOneway = (flags & IBinder::FLAG_ONEWAY) != 0;
     ScopedLocalRef<jobject> replyObj(env, nullptr);
     sp<JHwParcel> replyContext = nullptr;