i40evf: fix scan warning on sprintf

The driver was converted to use snprintf everywhere but this one function.
Just use snprintf, instead of sprintf.

Also a small spelling correction in a comment.

Change-ID: I59d45f94a52754c7b4cd6034df9a61d8132b7f77
Signed-off-by: Jesse Brandeburg <[e-mail]>
Tested-by: Sibai Li <[e-mail]>
Signed-off-by: Aaron Brown <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c

···
 }
 
 /**
- * i40evf_get_drvinto - Get driver info
+ * i40evf_get_drvinfo - Get driver info
  * @netdev: network interface device structure
  * @drvinfo: ethool driver info structure
  *

drivers/net/ethernet/intel/i40evf/i40evf_main.c

···
 	struct net_device *netdev = adapter->netdev;
 	int err;
 
-	sprintf(adapter->misc_vector_name, "i40evf:mbx");
+	snprintf(adapter->misc_vector_name,
+		 sizeof(adapter->misc_vector_name) - 1, "i40evf:mbx");
 	err = request_irq(adapter->msix_entries[0].vector,
 			  &i40evf_msix_aq, 0,
 			  adapter->misc_vector_name, netdev);