mv88e6xxx: Combine mv88e6131 and mv88e612_61_65 drivers

These drivers share a lot of code, so if we make them modular they
should be built into the same module.  Therefore, link them together
and merge their respective module init and exit functions.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/mv88e6131.c b/net/dsa/mv88e6131.c
index 9bd1061..45f4123 100644
--- a/net/dsa/mv88e6131.c
+++ b/net/dsa/mv88e6131.c
@@ -415,7 +415,7 @@
 	return ARRAY_SIZE(mv88e6131_hw_stats);
 }
 
-static struct dsa_switch_driver mv88e6131_switch_driver = {
+struct dsa_switch_driver mv88e6131_switch_driver = {
 	.tag_protocol		= cpu_to_be16(ETH_P_DSA),
 	.priv_size		= sizeof(struct mv88e6xxx_priv_state),
 	.probe			= mv88e6131_probe,
@@ -428,16 +428,3 @@
 	.get_ethtool_stats	= mv88e6131_get_ethtool_stats,
 	.get_sset_count		= mv88e6131_get_sset_count,
 };
-
-static int __init mv88e6131_init(void)
-{
-	register_switch_driver(&mv88e6131_switch_driver);
-	return 0;
-}
-module_init(mv88e6131_init);
-
-static void __exit mv88e6131_cleanup(void)
-{
-	unregister_switch_driver(&mv88e6131_switch_driver);
-}
-module_exit(mv88e6131_cleanup);