davinci: fix remaining board support after io_pgoffst removal

Some boards that were added after the mass io_pgoffst/io_physio
removal, and were not updated in the original patch.  Fixup here.

c.f. original io_pgoffst/io_physio removal
     commit 6451d778

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>