ARM: dts: am335x-pepper: switch to new cpsw switch drv

The dual_mac mode has been preserved the same way between legacy and new
driver, and one port devices works the same as 1 dual_mac port - it's safe
to switch drivers.

So, switch Gumstix Pepper to use new cpsw switch driver.
Those boards have or 2 Ext. port wired and configured in dual_mac mode by
default, or only 1 Ext. port.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-pepper.dts

@@ -260,20 +260,19 @@
 };
 
 /* Ethernet */
-&cpsw_emac0 {
-	status = "okay";
+&cpsw_port1 {
 	phy-handle = <&ethphy0>;
 	phy-mode = "rgmii";
+	ti,dual-emac-pvid = <1>;
 };
 
-&cpsw_emac1 {
-	status = "okay";
+&cpsw_port2 {
 	phy-handle = <&ethphy1>;
 	phy-mode = "rgmii";
+	ti,dual-emac-pvid = <2>;
 };
 
-&davinci_mdio {
-	status = "okay";
+&davinci_mdio_sw {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mdio_pins>;
 
@@ -286,13 +285,12 @@
 	};
 };
 
-&mac {
+&mac_sw {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&ethernet_pins>;
 };
 
-
 &am33xx_pinmux {
 	ethernet_pins: pinmux_ethernet {
 		pinctrl-single,pins = <