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/arm/ks8695net.c b/drivers/net/arm/ks8695net.c
index aa07657..a7b0caa 100644
--- a/drivers/net/arm/ks8695net.c
+++ b/drivers/net/arm/ks8695net.c
@@ -891,15 +891,16 @@
 			cmd->advertising |= ADVERTISED_Pause;
 		cmd->autoneg = AUTONEG_ENABLE;
 
-		cmd->speed = (ctrl & WMC_WSS) ? SPEED_100 : SPEED_10;
+		ethtool_cmd_speed_set(cmd,
+				      (ctrl & WMC_WSS) ? SPEED_100 : SPEED_10);
 		cmd->duplex = (ctrl & WMC_WDS) ?
 			DUPLEX_FULL : DUPLEX_HALF;
 	} else {
 		/* auto-negotiation is disabled */
 		cmd->autoneg = AUTONEG_DISABLE;
 
-		cmd->speed = (ctrl & WMC_WANF100) ?
-			SPEED_100 : SPEED_10;
+		ethtool_cmd_speed_set(cmd, ((ctrl & WMC_WANF100) ?
+					    SPEED_100 : SPEED_10));
 		cmd->duplex = (ctrl & WMC_WANFF) ?
 			DUPLEX_FULL : DUPLEX_HALF;
 	}