arm64: dts: rockchip: add core dtsi file for RK3399Pro SoCs

This patch adds core dtsi file for Rockchip RK3399Pro SoCs,
include rk3399.dtsi. Also enable pciei0/pcie_phy for AP to
talk to NPU part inside SoC.
Signed-off-by: NJianqun Xu <jay.xu@rock-chips.com>
Acked-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399pro.dtsi

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd.
+
+#include "rk3399.dtsi"
+
+/ {
+	compatible = "rockchip,rk3399pro";
+};
+
+/* Default to enabled since AP talk to NPU part over pcie */
+&pcie_phy {
+	status = "okay";
+};
+
+/* Default to enabled since AP talk to NPU part over pcie */
+&pcie0 {
+	ep-gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
+	num-lanes = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_clkreqn_cpm>;
+	status = "okay";
+};