board: gateworks: venice: add imx8mp-gw7905-2x support

The Gateworks imx8mp-venice-gw7905-2x consists of a SOM + baseboard.

The GW702x SOM contains the following:
 - i.MX8M Plus SoC
 - LPDDR4 memory
 - eMMC Boot device
 - Gateworks System Controller (GSC) with integrated EEPROM, button
   controller, and ADC's
 - PMIC
 - SOM connector providing:
  - eQoS GbE MII
  - 1x SPI
  - 2x I2C
  - 4x UART
  - 2x USB 3.0
  - 1x PCI
  - 1x SDIO (4-bit 3.3V)
  - 1x SDIO (4-bit 3.3V/1.8V)
  - GPIO

The GW7905 Baseboard contains the following:
 - GPS
 - microSD
 - off-board I/O connector with I2C, SPI, GPIO
 - EERPOM
 - PCIe clock generator
 - 1x full-length miniPCIe socket with PCI/USB3 (via mux) and USB2.0
 - 1x half-length miniPCIe socket with USB2.0 and USB3.0
 - USB 3.0 HUB
 - USB Type-C with USB PD Sink capability and peripheral support
 - USB Type-C with USB 3.0 host support

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

arch/arm/dts/Makefile

@@ -1017,6 +1017,7 @@ dtb-$(CONFIG_ARCH_IMX8M) += \
 	imx8mp-phyboard-pollux-rdk.dtb \
 	imx8mp-venice.dtb \
 	imx8mp-venice-gw74xx.dtb \
+	imx8mp-venice-gw7905-2x.dtb \
 	imx8mp-verdin-wifi-dev.dtb \
 	imx8mq-pico-pi.dtb \
 	imx8mq-kontron-pitx-imx8m.dtb \

arch/arm/dts/imx8mp-venice-gw702x-u-boot.dtsi

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2023 Gateworks Corporation
+ */
+
+#include "imx8mp-venice-u-boot.dtsi"
+
+&eqos {
+	/delete-property/ assigned-clocks;
+	/delete-property/ assigned-clock-parents;
+	/delete-property/ assigned-clock-rates;
+};