of/reconfig: Always use the same structure for notifiers

of/reconfig: Always use the same structure for notifiers

The OF_RECONFIG notifier callback uses a different structure depending
on whether it is a node change or a property change. This is silly, and
not very safe. Rework the code to use the same data structure regardless
of the type of notifier.

Signed-off-by: Grant Likely <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Pantelis Antoniou <[email protected]>
Cc: <[email protected]>