ARM: dts: imx6q-dhcom: Add ethernet VIO regulator

Add VIO regulator that supplies multiple ethernet magnetics and
currently there is no upstream support for that in the networking,
so just keep the regulator enabled always to emulate what other
boards, which have this hard-wired, do. Until there is support.
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: kernel@dh-electronics.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6q-dhcom-som.dtsi

@@ -33,6 +33,19 @@ memory@10000000 {
 		reg = <0x10000000 0x40000000>;
 	};
 
+	reg_eth_vio: regulator-eth-vio {
+		compatible = "regulator-fixed";
+		gpio = <&gpio1 7 GPIO_ACTIVE_LOW>;
+		pinctrl-0 = <&pinctrl_enet_vio>;
+		pinctrl-names = "default";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-name = "eth_vio";
+		vin-supply = <&sw2_reg>;
+	};
+
 	reg_usb_otg_vbus: regulator-usb-otg-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "usb_otg_vbus";
@@ -280,6 +293,11 @@ MX6QDL_PAD_ENET_TXD1__ENET_TX_DATA1	0x1b0b0
 			MX6QDL_PAD_GPIO_16__ENET_REF_CLK	0x4001b0a8
 			MX6QDL_PAD_EIM_WAIT__GPIO5_IO00		0x000b0
 			MX6QDL_PAD_KEY_ROW4__GPIO4_IO15		0x000b1
+		>;
+	};
+
+	pinctrl_enet_vio: enet-vio-grp {
+		fsl,pins = <
 			MX6QDL_PAD_GPIO_7__GPIO1_IO07		0x120b0
 		>;
 	};