net: Convert ethtool {get_stats, self_test}_count() ops to get_sset_count()

These string query operations were supposed to be replaced by the
generic get_sset_count() starting in 2007.  Convert the remaining
implementations.

Also remove calls to these operations to initialise drvinfo->n_stats.
The ethtool core code already does that.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/benet/be_ethtool.c b/drivers/net/benet/be_ethtool.c
index 11445df..851543a 100644
--- a/drivers/net/benet/be_ethtool.c
+++ b/drivers/net/benet/be_ethtool.c
@@ -281,9 +281,14 @@
 	}
 }
 
-static int be_get_stats_count(struct net_device *netdev)
+static int be_get_sset_count(struct net_device *netdev, int stringset)
 {
-	return ETHTOOL_STATS_NUM;
+	switch (stringset) {
+	case ETH_SS_STATS:
+		return ETHTOOL_STATS_NUM;
+	default:
+		return -EINVAL;
+	}
 }
 
 static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
@@ -364,7 +369,7 @@
 	.get_tso = ethtool_op_get_tso,
 	.set_tso = ethtool_op_set_tso,
 	.get_strings = be_get_stat_strings,
-	.get_stats_count = be_get_stats_count,
+	.get_sset_count = be_get_sset_count,
 	.get_ethtool_stats = be_get_ethtool_stats,
 	.flash_device = be_do_flash,
 };