cm_fx6: Remove CONFIG_NETMASK

We should not hardcode CONFIG_NETMASK in the config file.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Nikita Kiryanov <nikita@compulab.co.il>

include/configs/cm_fx6.h

@@ -222,7 +222,6 @@
 #define CONFIG_MII
 #define CONFIG_ETHPRIME			"FEC0"
 #define CONFIG_ARP_TIMEOUT		200UL
-#define CONFIG_NETMASK			255.255.255.0
 #define CONFIG_NET_RETRY_COUNT		5
 
 /* USB */