phy: core: Let node ptr of PHY point to PHY and not of PHY provider

In case of multi-phy PHY providers, each PHY should be modeled as a sub
node of the PHY provider. Then each PHY will have a different node pointer
(node pointer of sub node) than that of PHY provider. Added this provision
in the PHY core.
Also fixed all drivers to use the updated API.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/phy/phy-hix5hd2-sata.c b/drivers/phy/phy-hix5hd2-sata.c
index d442834..6a08fa5 100644
--- a/drivers/phy/phy-hix5hd2-sata.c
+++ b/drivers/phy/phy-hix5hd2-sata.c
@@ -156,7 +156,7 @@
 	if (IS_ERR(priv->peri_ctrl))
 		priv->peri_ctrl = NULL;
 
-	phy = devm_phy_create(dev, &hix5hd2_sata_phy_ops, NULL);
+	phy = devm_phy_create(dev, NULL, &hix5hd2_sata_phy_ops, NULL);
 	if (IS_ERR(phy)) {
 		dev_err(dev, "failed to create PHY\n");
 		return PTR_ERR(phy);