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b863f0b758
qemu_fdt_add_path() works like qemu_fdt_add_subnode(), except it also adds all missing subnodes from the given path. We'll use it in a coming patch where we will add cpu-map to the device tree. And we also tweak an error message of qemu_fdt_add_subnode(). Co-developed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Yanan Wang <wangyanan55@huawei.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Andrew Jones <drjones@redhat.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211020142125.7516-3-wangyanan55@huawei.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>