Fix warning: passing argument discards ‘const’ qualifier from pointer

Fix warning:
warning: passing argument 4 of ‘cuda_copy’ discards ‘const’ qualifier \
         from pointer target type [-Wdiscarded-qualifiers]

Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>

Author: ldorau

test/providers/ipc_cuda_prov_common.c

@@ -16,7 +16,7 @@ void memcopy(void *dst, const void *src, size_t size, void *context) {
     cuda_memory_provider_params_t *cu_params =
         (cuda_memory_provider_params_t *)context;
     int ret = cuda_copy(cu_params->cuda_context_handle,
-                        cu_params->cuda_device_handle, dst, src, size);
+                        cu_params->cuda_device_handle, dst, (void *)src, size);
     if (ret != 0) {
         fprintf(stderr, "cuda_copy failed with error %d\n", ret);
     }