net: dsa: bcm_sf2: Request APD, DLL disable and IDDQ-SR

When interfacing with a Broadcom PHY, request the auto-power down, DLL
disable and IDDQ-SR modes to be enabled.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/bcm_sf2.c

@@ -667,7 +667,9 @@ static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
 	if (priv->int_phy_mask & BIT(port))
 		return priv->hw_params.gphy_rev;
 	else
-		return 0;
+		return PHY_BRCM_AUTO_PWRDWN_ENABLE |
+		       PHY_BRCM_DIS_TXCRXC_NOENRGY |
+		       PHY_BRCM_IDDQ_SUSPEND;
 }
 
 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,