include: Convert ethernet mac address declarations to use ETH_ALEN

It's convenient to have ethernet mac addresses use
ETH_ALEN to be able to grep for them a bit easier and
also to ensure that the addresses are __aligned(2).

Add #include <linux/if_ether.h> as necessary.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/sh_eth.h b/include/linux/sh_eth.h
index fc30571..6205eeb 100644
--- a/include/linux/sh_eth.h
+++ b/include/linux/sh_eth.h
@@ -2,6 +2,7 @@
 #define __ASM_SH_ETH_H__
 
 #include <linux/phy.h>
+#include <linux/if_ether.h>
 
 enum {EDMAC_LITTLE_ENDIAN, EDMAC_BIG_ENDIAN};
 enum {
@@ -18,7 +19,7 @@
 	phy_interface_t phy_interface;
 	void (*set_mdio_gate)(void *addr);
 
-	unsigned char mac_addr[6];
+	unsigned char mac_addr[ETH_ALEN];
 	unsigned no_ether_link:1;
 	unsigned ether_link_active_low:1;
 	unsigned needs_init:1;