sky2: program proper register for fiber PHY

Driver was reading value from one register, setting bit and then
writing the wrong register.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/sky2.c

@@ -364,7 +364,7 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
 			/* for SFP-module set SIGDET polarity to low */
 			ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
 			ctrl |= PHY_M_FIB_SIGD_POL;
-			gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
+			gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
 		}
 
 		gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);