gpio: add Penwell gpio support
Intel Penwell chip has two 96 pins GPIO blocks, which are very similiar as Intel Langwell chip GPIO block, except for pin number difference. This patch expends the original Langwell GPIO driver to support Penwell's. Signed-off-by: NAlek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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