Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
index eca7d85..8856659 100644
--- a/drivers/net/mlx4/port.c
+++ b/drivers/net/mlx4/port.c
@@ -172,7 +172,7 @@
 		}
 
 		if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
-			/* MAC already registered, increase refernce count */
+			/* MAC already registered, increase references count */
 			++table->refs[i];
 			goto out;
 		}
@@ -360,7 +360,7 @@
 		if (table->refs[i] &&
 		    (vlan == (MLX4_VLAN_MASK &
 			      be32_to_cpu(table->entries[i])))) {
-			/* Vlan already registered, increase refernce count */
+			/* Vlan already registered, increase references count */
 			*index = i;
 			++table->refs[i];
 			goto out;