ethtool: cosmetic: Use ethtool ethtool_cmd_speed API

This updates the network drivers so that they don't access the
ethtool_cmd::speed field directly, but use ethtool_cmd_speed()
instead.

For most of the drivers, these changes are purely cosmetic and don't
fix any problem, such as for those 1GbE/10GbE drivers that indirectly
call their own ethtool get_settings()/mii_ethtool_gset(). The changes
are meant to enforce code consistency and provide robustness with
future larger throughputs, at the expense of a few CPU cycles for each
ethtool operation.

All drivers compiled with make allyesconfig ion x86_64 have been
updated.

Tested: make allyesconfig on x86_64 + e1000e/bnx2x work
Signed-off-by: David Decotigny <decot@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sc92031.c b/drivers/net/sc92031.c
index f3ffc1d..fa74314 100644
--- a/drivers/net/sc92031.c
+++ b/drivers/net/sc92031.c
@@ -1173,7 +1173,8 @@
 	if (phy_ctrl & PhyCtrlAne)
 		cmd->advertising |= ADVERTISED_Autoneg;
 
-	cmd->speed = (output_status & 0x2) ? SPEED_100 : SPEED_10;
+	ethtool_cmd_speed_set(cmd,
+			      (output_status & 0x2) ? SPEED_100 : SPEED_10);
 	cmd->duplex = (output_status & 0x4) ? DUPLEX_FULL : DUPLEX_HALF;
 	cmd->port = PORT_MII;
 	cmd->phy_address = phy_address;