net: fill in MODULE_DESCRIPTION()s for SMSC drivers

W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the SMSC 91x/911x/9420 Ethernet drivers.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/smsc/smc91x.c

@@ -98,6 +98,7 @@ static int watchdog = 1000;
 module_param(watchdog, int, 0400);
 MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
 
+MODULE_DESCRIPTION("SMC 91C9x/91C1xxx Ethernet driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:smc91x");
 

drivers/net/ethernet/smsc/smsc911x.c

@@ -56,6 +56,7 @@
 #define SMSC_MDIONAME		"smsc911x-mdio"
 #define SMSC_DRV_VERSION	"2008-10-21"
 
+MODULE_DESCRIPTION("SMSC LAN911x/LAN921x Ethernet driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(SMSC_DRV_VERSION);
 MODULE_ALIAS("platform:smsc911x");

drivers/net/ethernet/smsc/smsc9420.c

@@ -26,6 +26,7 @@
 #define DRV_DESCRIPTION		"SMSC LAN9420 driver"
 #define DRV_VERSION		"1.01"
 
+MODULE_DESCRIPTION("SMSC LAN9420 Ethernet driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);