ARM64: dts: meson-gxbb: Add rmii pinctrl node and rename rgmii node

For boards only supporting 10/100 ethernet over a RMII PHY link, add
a separate pinctrl node. By the way, rename the existing node to rgmii
specific naming in all boards dts.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts

@@ -97,8 +97,9 @@ &uart_AO {
 
 &ethmac {
 	status = "okay";
-	pinctrl-0 = <&eth_pins>;
+	pinctrl-0 = <&eth_rmii_pins>;
 	pinctrl-names = "default";
+	phy-mode = "rmii";
 };
 
 &ir {

arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts

@@ -83,7 +83,7 @@ &uart_AO {
 
 &ethmac {
 	status = "okay";
-	pinctrl-0 = <&eth_pins>;
+	pinctrl-0 = <&eth_rgmii_pins>;
 	pinctrl-names = "default";
 };
 

arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi

@@ -81,7 +81,7 @@ &uart_AO {
 
 &ethmac {
 	status = "okay";
-	pinctrl-0 = <&eth_pins>;
+	pinctrl-0 = <&eth_rgmii_pins>;
 	pinctrl-names = "default";
 };
 

arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi

@@ -82,7 +82,7 @@ &ir {
 
 &ethmac {
 	status = "okay";
-	pinctrl-0 = <&eth_pins>;
+	pinctrl-0 = <&eth_rgmii_pins>;
 	pinctrl-names = "default";
 };
 

arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi

@@ -443,7 +443,7 @@ mux {
 			};
 		};
 
-		eth_pins: eth_c {
+		eth_rgmii_pins: eth-rgmii {
 			mux {
 				groups = "eth_mdio",
 				       "eth_mdc",
@@ -463,6 +463,21 @@ mux {
 			};
 		};
 
+		eth_rmii_pins: eth-rmii {
+			mux {
+				groups = "eth_mdio",
+				       "eth_mdc",
+				       "eth_clk_rx_clk",
+				       "eth_rx_dv",
+				       "eth_rxd0",
+				       "eth_rxd1",
+				       "eth_tx_en",
+				       "eth_txd0",
+				       "eth_txd1";
+				function = "eth";
+			};
+		};
+
 		pwm_a_x_pins: pwm_a_x {
 			mux {
 				groups = "pwm_a_x";