net: fec: make use of generic NET_SELFTESTS library

With this patch FEC on iMX will able to run generic net selftests

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>

drivers/net/ethernet/freescale/Kconfig

@@ -26,6 +26,7 @@ config FEC
 		   ARCH_MXC || SOC_IMX28 || COMPILE_TEST)
 	default ARCH_MXC || SOC_IMX28 if ARM
 	select CRC32
+	select NET_SELFTESTS
 	select PHYLIB
 	imply PTP_1588_CLOCK
 	help

drivers/net/ethernet/freescale/fec_main.c

@@ -38,6 +38,7 @@
 #include <linux/in.h>
 #include <linux/ip.h>
 #include <net/ip.h>
+#include <net/selftests.h>
 #include <net/tso.h>
 #include <linux/tcp.h>
 #include <linux/udp.h>
@@ -2482,6 +2483,9 @@ static void fec_enet_get_strings(struct net_device *netdev,
 			memcpy(data + i * ETH_GSTRING_LEN,
 				fec_stats[i].name, ETH_GSTRING_LEN);
 		break;
+	case ETH_SS_TEST:
+		net_selftest_get_strings(data);
+		break;
 	}
 }
 
@@ -2490,6 +2494,8 @@ static int fec_enet_get_sset_count(struct net_device *dev, int sset)
 	switch (sset) {
 	case ETH_SS_STATS:
 		return ARRAY_SIZE(fec_stats);
+	case ETH_SS_TEST:
+		return net_selftest_get_count();
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -2741,6 +2747,7 @@ static const struct ethtool_ops fec_enet_ethtool_ops = {
 	.set_wol		= fec_enet_set_wol,
 	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
 	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
+	.self_test		= net_selftest,
 };
 
 static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)