arm64: dts: qcom: sc7280: Add Herobrine

Herobrine is a Chrome OS board/platform based on the QCA SC7280.
Add a .dtsi for the platform parts and a .dts for the board
specific bits. Currently the .dtsi has everything except the
compatible strings, things will likely get shuffled around in the
future as we learn more about the differences between boards.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211007140854.1.I70615769f27bbaf7e480419d0f660f802b1fea43@changeid

arch/arm64/boot/dts/qcom/Makefile

@@ -75,6 +75,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-pompom-r3.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-pompom-r3-lte.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-r1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-r1-lte.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-herobrine.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-idp2.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sdm630-sony-xperia-ganges-kirin.dtb

arch/arm64/boot/dts/qcom/sc7280-herobrine.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Google Herobrine board device tree source
+ *
+ * Copyright 2021 Google LLC.
+ */
+
+#include "sc7280-herobrine.dtsi"
+
+/ {
+	model = "Google Herobrine";
+	compatible = "google,herobrine",
+		     "qcom,sc7280";
+};