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/usb/rtl8150.c b/drivers/net/usb/rtl8150.c
index e85c89c..041fb7d 100644
--- a/drivers/net/usb/rtl8150.c
+++ b/drivers/net/usb/rtl8150.c
@@ -843,10 +843,11 @@
 	get_registers(dev, BMCR, 2, &bmcr);
 	get_registers(dev, ANLP, 2, &lpa);
 	if (bmcr & BMCR_ANENABLE) {
+		u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ?
+			     SPEED_100 : SPEED_10);
+		ethtool_cmd_speed_set(ecmd, speed);
 		ecmd->autoneg = AUTONEG_ENABLE;
-		ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
-			     SPEED_100 : SPEED_10;
-		if (ecmd->speed == SPEED_100)
+		if (speed == SPEED_100)
 			ecmd->duplex = (lpa & LPA_100FULL) ?
 			    DUPLEX_FULL : DUPLEX_HALF;
 		else
@@ -854,8 +855,8 @@
 			    DUPLEX_FULL : DUPLEX_HALF;
 	} else {
 		ecmd->autoneg = AUTONEG_DISABLE;
-		ecmd->speed = (bmcr & BMCR_SPEED100) ?
-		    SPEED_100 : SPEED_10;
+		ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ?
+					     SPEED_100 : SPEED_10));
 		ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
 		    DUPLEX_FULL : DUPLEX_HALF;
 	}