ARM: dts: stm32: add STM32MP1-based Phytec board

Add the Phytec STM32MP1-3 Dev board. The devboard uses a Phytec
stm32m157c-som.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/Makefile

@@ -1266,7 +1266,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32mp157c-ev1.dtb \
 	stm32mp157c-ev1-scmi.dtb \
 	stm32mp157c-lxa-mc1.dtb \
-	stm32mp157c-odyssey.dtb
+	stm32mp157c-odyssey.dtb \
+	stm32mp157c-phycore-stm32mp1-3.dtb
 dtb-$(CONFIG_MACH_SUN4I) += \
 	sun4i-a10-a1000.dtb \
 	sun4i-a10-ba10-tvbox.dtb \

arch/arm/boot/dts/stm32mp157c-phycore-stm32mp1-3.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) Phytec GmbH 2019-2020 - All Rights Reserved
+ * Author: Dom VOVARD <dom.vovard@linrt.com>.
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/pinctrl/stm32-pinfunc.h>
+#include "stm32mp157.dtsi"
+#include "stm32mp15xc.dtsi"
+#include "stm32mp15xxac-pinctrl.dtsi"
+#include "stm32mp157c-phycore-stm32mp15-som.dtsi"
+
+/ {
+	model = "PHYTEC phyCORE-STM32MP1-3 Dev Board";
+	compatible = "phytec,phycore-stm32mp1-3",
+		     "phytec,phycore-stm32mp157c-som", "st,stm32mp157";
+
+	aliases {
+		mmc0 = &sdmmc1;
+		mmc1 = &sdmmc2;
+		mmc2 = &sdmmc3;
+		serial0 = &uart4;
+		serial1 = &usart3;
+		serial2 = &usart1;
+	};
+};
+
+&cryp1 {
+	status = "okay";
+};
+
+&dts {
+	status = "okay";
+};
+
+&fmc {
+	status = "disabled";
+};
+
+&gpu {
+	status = "okay";
+};
+
+&i2c4_eeprom {
+	status = "okay";
+};
+
+&i2c4_rtc {
+	status = "okay";
+};
+
+&qspi {
+	status = "okay";
+};
+
+&sdmmc2 {
+	status = "okay";
+};