Convert SMC911X Ethernet driver to CONFIG_NET_MULTI API

All in-tree boards that use this controller have CONFIG_NET_MULTI added
Also:
 - changed CONFIG_DRIVER_SMC911X* to CONFIG_SMC911X*
 - cleaned up line lengths
 - modified all boards that override weak function in this driver
 - added

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Tested-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/netdev.h b/include/netdev.h
index 17fdafb..d8056ab 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -71,6 +71,7 @@
 int rtl8169_initialize(bd_t *bis);
 int scc_initialize(bd_t *bis);
 int skge_initialize(bd_t *bis);
+int smc911x_initialize(u8 dev_num, int base_addr);
 int tsi108_eth_initialize(bd_t *bis);
 int uec_initialize(int index);
 int uec_standard_init(bd_t *bis);