ARM: zynq: Remove DTC 1.4.2 warnings

DTC 1.4.2 reports these warnings:
Warning (unit_address_vs_reg): Node /memory has a reg or ranges
property, but no unit name
Warning (unit_address_vs_reg): Node /pmu has a reg or ranges property,
but no unit name
Warning (unit_address_vs_reg): Node /fixedregulator@0 has a unit name,
but no reg property

This patch is fixing them.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynq-7000.dtsi b/arch/arm/dts/zynq-7000.dtsi
index b618a3f..6df0329 100644
--- a/arch/arm/dts/zynq-7000.dtsi
+++ b/arch/arm/dts/zynq-7000.dtsi
@@ -6,9 +6,10 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
-/include/ "skeleton.dtsi"
 
 / {
+	#address-cells = <1>;
+	#size-cells = <1>;
 	compatible = "xlnx,zynq-7000";
 
 	cpus {
@@ -37,14 +38,14 @@
 		};
 	};
 
-	pmu {
+	pmu@f8891000 {
 		compatible = "arm,cortex-a9-pmu";
 		interrupts = <0 5 4>, <0 6 4>;
 		interrupt-parent = <&intc>;
 		reg = < 0xf8891000 0x1000 0xf8893000 0x1000 >;
 	};
 
-	regulator_vccpint: fixedregulator@0 {
+	regulator_vccpint: fixedregulator {
 		compatible = "regulator-fixed";
 		regulator-name = "VCCPINT";
 		regulator-min-microvolt = <1000000>;