[HIPIFY][cuDNN] Add cudnnGetFilter4dDescriptor support

+ Update cudnn_convolution_forward test accordingly

hipify-clang/src/CUDA2HIP_DNN_API_functions.cpp

@@ -76,7 +76,7 @@ const std::map<llvm::StringRef, hipCounter> CUDA_DNN_FUNCTION_MAP{
   // cuDNN Filter functions
   {"cudnnCreateFilterDescriptor",                         {"hipdnnCreateFilterDescriptor",                         "", CONV_LIB_FUNC, API_DNN}},
   {"cudnnSetFilter4dDescriptor",                          {"hipdnnSetFilter4dDescriptor",                          "", CONV_LIB_FUNC, API_DNN}},
-  {"cudnnGetFilter4dDescriptor",                          {"hipdnnGetFilter4dDescriptor",                          "", CONV_LIB_FUNC, API_DNN, HIP_UNSUPPORTED}},
+  {"cudnnGetFilter4dDescriptor",                          {"hipdnnGetFilter4dDescriptor",                          "", CONV_LIB_FUNC, API_DNN}},
   {"cudnnSetFilterNdDescriptor",                          {"hipdnnSetFilterNdDescriptor",                          "", CONV_LIB_FUNC, API_DNN}},
   {"cudnnGetFilterNdDescriptor",                          {"hipdnnGetFilterNdDescriptor",                          "", CONV_LIB_FUNC, API_DNN}},
   {"cudnnDestroyFilterDescriptor",                        {"hipdnnDestroyFilterDescriptor",                        "", CONV_LIB_FUNC, API_DNN}},