board: at91: sama5d29_curiosity: add initial support for sama5d29_curiosity

Add initial support for sama5d29_curiosity board.

Hardware:
SoC: SAMA5D29 500 MHz
DRAM: LPDDR2 512 MiB
PMIC: MCP16502
Debug: UART0
Flash: QSPI NOR 8 MiB
RGB LCD connector
Mikrobus connectors x 2
SD-Card connectors x 2
USB 2.0 x 2

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
diff --git a/arch/arm/dts/at91-sama5d29_curiosity-u-boot.dtsi b/arch/arm/dts/at91-sama5d29_curiosity-u-boot.dtsi
new file mode 100644
index 0000000..798761c
--- /dev/null
+++ b/arch/arm/dts/at91-sama5d29_curiosity-u-boot.dtsi
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * at91-sama5d29_curiosity-u-boot.dtsi - Device Tree file for SAMA5D2 SoC u-boot properties.
+ *
+ * Copyright (c) 2023, Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Mihai Sain <mihai.sain@microchip.com>
+ *
+ */
+
+/ {
+	chosen {
+		bootph-all;
+	};
+};
+
+&pinctrl_qspi1_default {
+	bootph-all;
+};
+
+&pinctrl_sdmmc0_default {
+	bootph-all;
+};
+
+&pinctrl_sdmmc1_default {
+	bootph-all;
+};
+
+&hlcdc {
+	bootph-all;
+};
+
+&pioA {
+	bootph-all;
+};
+
+&qspi1 {
+	bootph-all;
+
+	flash@0 {
+		bootph-all;
+	};
+};
+
+&sdmmc0 {
+	bootph-all;
+};
+
+&sdmmc1 {
+	bootph-all;
+};
+
+&uart0 {
+	bootph-all;
+};