Fix types imports in nrt

Author: VijayKandiah

numba_cuda/numba/cuda/memory_management/nrt.py

@@ -7,8 +7,8 @@
 import numpy as np
 from collections import namedtuple
 
-from numba import cuda, types
-from numba.cuda import config
+from numba import cuda
+from numba.cuda import config, types
 
 from numba.cuda.cudadrv.driver import (
     _Linker,