of: Change of_machine_is_compatible() to return bool
of_machine_is_compatible() currently returns a positive integer if it finds a match. However none of the callers ever check the value, they all treat it as a true/false. So change of_machine_is_compatible() to return bool, which will allow the implementation to be changed in a subsequent patch. Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231214103152.12269-2-mpe@ellerman.id.au
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