References to node@address are incorrectly handled

[zxombie]

The following seems to be common in Linux dts files:

/dts-v1/;

/ {
    foo@0 {
    };

    bar {
        ref = <&{/foo@0}>;
    };
};

We fail with:

Failed to find node with label: /foo@0
Failed to parse tree.

We also incorrectly parse this:

/dts-v1/;

/ {
    foo@0 {
    };

    bar {
        ref = <&{/foo}>;
    };
};

[zxombie]

The second case should fail. GNU dtc rejects it with:

ERROR (phandle_references): Reference to non-existent node or label "/foo"

ERROR: Input tree has errors, aborting (use -f to force output)