Update calls to IInterface::asBinder()

to use the new static version.

Change-Id: I89a5988a0ac694ffc04d88cf939e8455bf925d4c
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.cpp b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
index eb91bd4..453c8bd 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.cpp
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
@@ -129,7 +129,7 @@
     result.appendFormat("Camera2ClientBase[%d] (%p) PID: %d, dump:\n",
             TClientBase::mCameraId,
             (TClientBase::getRemoteCallback() != NULL ?
-                    TClientBase::getRemoteCallback()->asBinder().get() : NULL),
+                    IInterface::asBinder(TClientBase::getRemoteCallback()).get() : NULL),
             TClientBase::mClientPid);
     result.append("  State: ");