Fix copypasta error.

theano/sandbox/gpuarray/basic_ops.py

@@ -341,7 +341,7 @@ class CudaFromGpu(Op):
         return hash(type(self))
 
     def __str__(self):
-        return 'GpuFromCuda'
+        return 'CudaFromGpu'
 
     def make_node(self, x):
         from theano.sandbox.cuda import CudaNdArrayType