tg3: Enable phy APD for 5717 and later asic revs

This patch enables the gphy autopowerdown feature in the phy for all
new devices that support it.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 3079e1f..afb79db 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -12431,8 +12431,9 @@
 		if (cfg2 & (1 << 18))
 			tp->phy_flags |= TG3_PHYFLG_SERDES_PREEMPHASIS;
 
-		if (((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
-		      GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX)) &&
+		if (((tp->tg3_flags3 & TG3_FLG3_5717_PLUS) ||
+		    ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
+		      GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX))) &&
 		    (cfg2 & NIC_SRAM_DATA_CFG_2_APD_EN))
 			tp->phy_flags |= TG3_PHYFLG_ENABLE_APD;