arm64: dts: qcom: Add sc7180-lazor sku2

Add a new SKU variant.  This is a pick from the downstream tree that
is the current source of truth for this platform.

Link: https://crrev.com/c/2386997Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20200908133037.1.Ia98a6b938453254e360c4a9fa253d2d6807dff3f@changeidSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/Makefile

@@ -21,6 +21,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8998-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-idp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-lazor-r0.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-lazor-r1.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-lazor-r1-kb.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-lazor-r1-lte.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-r1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-r1-lte.dtb

arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor-r1-kb.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Google Lazor board device tree source
+ *
+ * Copyright 2020 Google LLC.
+ */
+
+#include "sc7180-trogdor-lazor-r1.dts"
+
+/ {
+	model = "Google Lazor (rev1+) with KB Backlight";
+	compatible = "google,lazor-sku2", "qcom,sc7180";
+};
+
+&keyboard_backlight {
+	status = "okay";
+};