[PATCH v4 0/4] gpio: aspeed: Fixes and support for sharing with co-processor

[Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>]

This series cleans up the register accessors a bit, adds missing ones,
fixes the access to the write latch and finally adds an interface
that a co-processor driver can use to change the owner of some of
the GPIO lines and arbitrate access to shared GPIO banks.

v2: - Address Joel comments
v3: - Adds Reviewed-by tags
v4: - Document the reason for including gpiolob.h
    - Expose GPIO offsets & bit number so coprocessor firmware doesn't
      have to hard-code them (allows multi-system generic firwmare
      that gets "configure" by the copro driver)

Please consider putting this in a topic branch so I can pull it
back into dependent series and point the reviewers to dependencies


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