arm64: dts: imx8m{m,n}-venice-gw7902: add SDR50/SDR104 SDIO support for wifi

The GW7902 has a Murata LBEE5H 802.11abgnac / BT5 module based on the
Cypress CYW43455 which supports SDR50/SDR104.

Add dt pinctrl for the 100mhz and 200mhz states to support SDR50/SDR104.

While at it add the dt node for the CYW43455 wifi.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7902.dts

@@ -714,12 +714,21 @@ &usbotg2 {
 
 /* SDIO WiFi */
 &usdhc2 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
 	pinctrl-0 = <&pinctrl_usdhc2>;
+	pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
 	bus-width = <4>;
 	non-removable;
 	vmmc-supply = <&reg_wifi>;
+	#address-cells = <1>;
+	#size-cells = <0>;
 	status = "okay";
+
+	wifi@0 {
+		compatible = "brcm,bcm43455-fmac";
+		reg = <0>;
+	};
 };
 
 /* eMMC */
@@ -992,6 +1001,28 @@ MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3	0x1d0
 		>;
 	};
 
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK		0x194
+			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD		0x1d4
+			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0	0x1d4
+			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1	0x1d4
+			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2	0x1d4
+			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3	0x1d4
+		>;
+	};
+
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK		0x196
+			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD		0x1d6
+			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0	0x1d6
+			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1	0x1d6
+			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2	0x1d6
+			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3	0x1d6
+		>;
+	};
+
 	pinctrl_usdhc3: usdhc3grp {
 		fsl,pins = <
 			MX8MM_IOMUXC_NAND_WE_B_USDHC3_CLK	0x190

arch/arm64/boot/dts/freescale/imx8mn-venice-gw7902.dts

@@ -667,12 +667,21 @@ &usbotg1 {
 
 /* SDIO WiFi */
 &usdhc2 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
 	pinctrl-0 = <&pinctrl_usdhc2>;
+	pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
 	bus-width = <4>;
 	non-removable;
 	vmmc-supply = <&reg_wifi>;
+	#address-cells = <1>;
+	#size-cells = <0>;
 	status = "okay";
+
+	wifi@0 {
+		compatible = "brcm,bcm43455-fmac";
+		reg = <0>;
+	};
 };
 
 /* eMMC */
@@ -923,6 +932,28 @@ MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3	0x1d0
 		>;
 	};
 
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK		0x194
+			MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD		0x1d4
+			MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0	0x1d4
+			MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1	0x1d4
+			MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2	0x1d4
+			MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3	0x1d4
+		>;
+	};
+
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK		0x196
+			MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD		0x1d6
+			MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0	0x1d6
+			MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1	0x1d6
+			MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2	0x1d6
+			MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3	0x1d6
+		>;
+	};
+
 	pinctrl_usdhc3: usdhc3grp {
 		fsl,pins = <
 			MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK	0x190