gpio: 74x164: Remove linux/init.h and sort headers

There is no need to include linux/init.h when at the same time
we include linux/module.h.

Remove redundant inclusion.

While here, sort header block alphabetically for easy maintenance.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>