cxgb4/cxgb4vf: Remove superfluous void * cast in debugfs_create_file() call

There is no need to cast a typed pointer to a void pointer when calling
a function that accepts the latter.  Remove it, as the cast prevents
further compiler checks.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c

@@ -2480,7 +2480,7 @@ static int setup_debugfs(struct adapter *adapter)
 	for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
 		debugfs_create_file(debugfs_files[i].name,
 				    debugfs_files[i].mode,
-				    adapter->debugfs_root, (void *)adapter,
+				    adapter->debugfs_root, adapter,
 				    debugfs_files[i].fops);
 
 	return 0;