arch: arm: Agilex5 enablement

This patch is to enable Agilex5 platform for Intel
product. Changes, modification and new files are
created for board, dts, configs and makefile to
create the base for Agilex5.

Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@intel.com>
diff --git a/arch/arm/dts/socfpga_agilex5-u-boot.dtsi b/arch/arm/dts/socfpga_agilex5-u-boot.dtsi
new file mode 100644
index 0000000..a8167e5
--- /dev/null
+++ b/arch/arm/dts/socfpga_agilex5-u-boot.dtsi
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * U-Boot additions
+ *
+ * Copyright (C) 2024 Intel Corporation <www.intel.com>
+ */
+
+#include "socfpga_soc64_fit-u-boot.dtsi"
+
+/{
+	memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		bootph-all;
+	};
+};
+
+&clkmgr {
+	bootph-all;
+};
+
+&i2c0 {
+	reset-names = "i2c";
+};
+
+&i2c1 {
+	reset-names = "i2c";
+};
+
+&i2c2 {
+	reset-names = "i2c";
+};
+
+&i2c3 {
+	reset-names = "i2c";
+};
+
+&mmc {
+	resets = <&rst SDMMC_RESET>, <&rst SDMMC_OCP_RESET>;
+};
+
+&porta {
+	bank-name = "porta";
+};
+
+&portb {
+	bank-name = "portb";
+};
+
+&qspi {
+	bootph-all;
+};
+
+&rst {
+	compatible = "altr,rst-mgr";
+	altr,modrst-offset = <0x24>;
+	bootph-all;
+};
+
+&sysmgr {
+	compatible = "altr,sys-mgr", "syscon";
+	bootph-all;
+};
+
+&uart0 {
+	bootph-all;
+};
+
+&watchdog0 {
+	bootph-all;
+};