Here is the quote from [1]:
    The unit-address must match the first address specified
    in the reg property of the node. If the node has no reg property,
    the @ and unit-address must be omitted and the node-name alone
    differentiates the node from other nodes at the same level
This patch adjusts MIPS dts-files and devicetree binding
documentation in accordance with [1].
    [1] Power.org(tm) Standard for Embedded Power Architecture(tm)
        Platform Requirements (ePAPR). Version 1.1 – 08 April 2011.
        Chapter 2.2.1.1 Node Name Requirements
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13345/
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 - compatible : Should be "mti,cpu-interrupt-controller"
 
 Example devicetree:
-       cpu-irq: cpu-irq@0 {
+       cpu-irq: cpu-irq {
                #address-cells = <0>;
 
                interrupt-controller;
 
        #size-cells = <1>;
        compatible = "ingenic,jz4740";
 
-       cpuintc: interrupt-controller@0 {
+       cpuintc: interrupt-controller {
                #address-cells = <0>;
                #interrupt-cells = <1>;
                interrupt-controller;
 
                };
        };
 
-       cpuintc: cpuintc@0 {
+       cpuintc: cpuintc {
                #address-cells = <0>;
                #interrupt-cells = <1>;
                interrupt-controller;
 
                };
        };
 
-       cpuintc: cpuintc@0 {
+       cpuintc: cpuintc {
                #address-cells = <0>;
                #interrupt-cells = <1>;
                interrupt-controller;
 
                };
        };
 
-       cpuintc: cpuintc@0 {
+       cpuintc: cpuintc {
                #address-cells = <0>;
                #interrupt-cells = <1>;
                interrupt-controller;
 
                };
        };
 
-       cpuintc: cpuintc@0 {
+       cpuintc: cpuintc {
                #address-cells = <0>;
                #interrupt-cells = <1>;
                interrupt-controller;
 
                reg = <0x0 0x08000000>;
        };
 
-       cpuintc: interrupt-controller@0 {
+       cpuintc: interrupt-controller {
                #address-cells = <0>;
                #interrupt-cells = <1>;
                interrupt-controller;