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/smsc911x.h b/include/linux/smsc911x.h
index 4dde70e..eec3efd 100644
--- a/include/linux/smsc911x.h
+++ b/include/linux/smsc911x.h
@@ -22,6 +22,7 @@
 #define __LINUX_SMSC911X_H__
 
 #include <linux/phy.h>
+#include <linux/if_ether.h>
 
 /* platform_device configuration data, should be assigned to
  * the platform_device's dev.platform_data */
@@ -31,7 +32,7 @@
 	unsigned int flags;
 	unsigned int shift;
 	phy_interface_t phy_interface;
-	unsigned char mac[6];
+	unsigned char mac[ETH_ALEN];
 };
 
 /* Constants for platform_device irq polarity configuration */