gianfar: Increase TX_TIMEOUT to 5HZ

Increased TX_TIMEOUT to 5HZ to accommodate worst case situation
for traffic and CPU intensive use cases

Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: Abhimanyu <abhimanyu@freescale.com>
Acked-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/gianfar.c

@@ -107,7 +107,7 @@
 
 #include "gianfar.h"
 
-#define TX_TIMEOUT      (1*HZ)
+#define TX_TIMEOUT      (5*HZ)
 
 const char gfar_driver_version[] = "2.0";