Camera: Disallow dumping clients directly

Camera service dumps should only be initiated through
ICameraService::dump.

Bug: 26265403
Change-Id: If3ca4718ed74bf33ad8a416192689203029e2803
diff --git a/services/camera/libcameraservice/api1/Camera2Client.cpp b/services/camera/libcameraservice/api1/Camera2Client.cpp
index b093946..131048e 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.cpp
+++ b/services/camera/libcameraservice/api1/Camera2Client.cpp
@@ -158,6 +158,10 @@
 }
 
 status_t Camera2Client::dump(int fd, const Vector<String16>& args) {
+    return BasicClient::dump(fd, args);
+}
+
+status_t Camera2Client::dumpClient(int fd, const Vector<String16>& args) {
     String8 result;
     result.appendFormat("Client2[%d] (%p) Client: %s PID: %d, dump:\n",
             mCameraId,