ARM: dts: Add device tree files for hpe gxp soc

The HPE SoC is new to linux. A basic device tree layout with minimum
required for linux to boot including a timer and watchdog support has
been created.

The dts file is empty at this point but will be updated in subsequent
updates as board specific features are enabled.

Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 2873d04..4b940f8 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1247,6 +1247,8 @@
 
 dtb-$(CONFIG_TARGET_PRESIDIO_ASIC) += ca-presidio-engboard.dtb
 
+dtb-$(CONFIG_TARGET_GXP) += hpe-bmc-dl360gen10.dts
+
 dtb-$(CONFIG_TARGET_IMX8MM_CL_IOT_GATE) += imx8mm-cl-iot-gate.dtb \
 					imx8mm-cl-iot-gate-ied.dtbo \
 					imx8mm-cl-iot-gate-ied-adc0.dtbo \