arm64: dts: qcom: Add SDX75 platform and IDP board support

Add basic devicetree support for SDX75 platform and IDP board from
Qualcomm. The SDX75 platform features an ARM Cortex A55 CPU which forms
the Application Processor Sub System (APSS) along with standard Qualcomm
peripherals like GCC, TLMM, UART, QPIC, and BAM etc... Also, there
exists the networking parts such as IPA, MHI, PCIE-EP, EMAC, and Modem
etc..
Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/1686311438-24177-6-git-send-email-quic_rohiagar@quicinc.com

arch/arm64/boot/dts/qcom/Makefile

@@ -182,6 +182,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-xiaomi-polaris.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-shift-axolotl.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-lenovo-yoga-c630.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-samsung-w737.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sdx75-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm4250-oneplus-billie2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6115-fxtec-pro1x.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6115p-lenovo-j606f.dtb

arch/arm64/boot/dts/qcom/sdx75-idp.dts

+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "sdx75.dtsi"
+
+/ {
+	model = "Qualcomm Technologies, Inc. SDX75 IDP";
+	compatible = "qcom,sdx75-idp", "qcom,sdx75";
+
+	aliases {
+		serial0 = &uart1;
+	};
+};
+
+&chosen {
+	stdout-path = "serial0:115200n8";
+};
+
+&qupv3_id_0 {
+	status = "okay";
+};
+
+&tlmm {
+	gpio-reserved-ranges = <110 6>;
+};
+
+&uart1 {
+	status = "okay";
+};