brcm63xx: do a full reset phy cycle

Make sure we do a proper reset of the phy, if the phy reset is defined.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

target/linux/brcm63xx/patches-4.4/381-net-bcm63xx_enet-fully-reset-ephy.patch

+From: Jonas Gorski <jonas.gorski@gmail.com>
+Subject: [PATCH] net: bcm63xx_enet: fully reset ephy
+
+Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
+---
+ drivers/net/ethernet/broadcom/bcm63xx_enet.c |    4 ++--
+ 1 file changed, 2 insertions(+), , 1 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+@@ -2857,7 +2857,7 @@ static int bcm_enet_shared_probe(struct
+ 
+ 	memset(bcm_enet_shared_base, 0, sizeof(bcm_enet_shared_base));
+ 
+-	ephy_reset = devm_gpiod_get_optional(&pdev->dev, "ephy-reset", GPIOD_ASIS);
++	ephy_reset = devm_gpiod_get_optional(&pdev->dev, "ephy-reset", GPIOD_OUT_HIGH);
+ 	if (IS_ERR(ephy_reset))
+ 		return PTR_ERR(ephy_reset);
+ 
+@@ -2871,7 +2871,7 @@ static int bcm_enet_shared_probe(struct
+ 	memcpy(bcm_enet_shared_base, p, sizeof(bcm_enet_shared_base));
+ 
+ 	if (ephy_reset)
+-		gpiod_direction_output(ephy_reset, 0);
++		gpiod_set_value(ephy_reset, 0);
+ 
+ 	return 0;
+ }