ARC: make a copy of flat DT
The flat DT (currently embedded in vmlinux) is in .init section. The unflattened/binary tree doesn't copy strings through and references them from orig flat DT - which could cause catestrohpy if of_* APIs are called post init, say from a driver which is a loadable module. Reported-by: NJames Hogan <james.hogan@imgtec.com> Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
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