net: dwc_eth_qos: Convert to use APIs which support live DT

Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.
Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com>

drivers/net/dwc_eth_qos.c

@@ -26,6 +26,7 @@
  *    supports a single RGMII PHY. This configuration also has SW control over
  *    all clock and reset signals to the HW block.
  */
+
 #include <common.h>
 #include <clk.h>
 #include <cpu_func.h>
@@ -1893,8 +1894,7 @@ static phy_interface_t eqos_get_interface_stm32(struct udevice *dev)
 
 	debug("%s(dev=%p):\n", __func__, dev);
 
-	phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
-			       NULL);
+	phy_mode = dev_read_prop(dev, "phy-mode", NULL);
 	if (phy_mode)
 		interface = phy_get_interface_by_name(phy_mode);
 
@@ -1931,8 +1931,7 @@ static phy_interface_t eqos_get_interface_imx(struct udevice *dev)
 
 	debug("%s(dev=%p):\n", __func__, dev);
 
-	phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
-			       NULL);
+	phy_mode = dev_read_prop(dev, "phy-mode", NULL);
 	if (phy_mode)
 		interface = phy_get_interface_by_name(phy_mode);