Update calls to IInterface::asBinder()

to use the new static version.

Change-Id: I89a5988a0ac694ffc04d88cf939e8455bf925d4c
diff --git a/camera/camera2/ICameraDeviceUser.cpp b/camera/camera2/ICameraDeviceUser.cpp
index ff4a0c2..35345d2 100644
--- a/camera/camera2/ICameraDeviceUser.cpp
+++ b/camera/camera2/ICameraDeviceUser.cpp
@@ -219,7 +219,7 @@
 
         data.writeInt32(1); // marker that bufferProducer is not null
         data.writeString16(String16("unknown_name")); // name of surface
-        sp<IBinder> b(bufferProducer->asBinder());
+        sp<IBinder> b(IInterface::asBinder(bufferProducer));
         data.writeStrongBinder(b);
 
         remote()->transact(CREATE_STREAM, data, &reply);