of: return -ENOENT when no property
Make of_parse_phandle_with_args return -ENOENT instead of -EINVAL when no matching property is found, which allows to discriminate between absence of property and parsing error. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
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