Removing deprecated drivers from drivers/i2c/chips

[Wolfram Sang]

Hi,

continuing the quest to clean up and ultimately remove the drivers/i2c/chips
directory, this patch series removes three drivers for GPIO-expanders which are
obsoleted and marked as deprecated for more than a year. The newer (and better)
drivers can be found in drivers/gpio.

As it is ensured that the newer drivers cover the same i2c_device_ids, all
platform_devices will still match. Some defconfig updates may be necessary
though, but according to [1] this is left to the arch|platform-maintainers
(also as most defconfigs are quite outdated). For that reason, I put the
relevant arch-mailing-lists to Cc. Comments are welcome.

Regards,

   Wolfram

[1] http://lkml.org/lkml/2009/5/7/34