pinctrl: xway: fix typo

A typo in the previous commit to this file needs fixing.

Cc: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 6b4316ae ("pinctrl: xway: Change structure initialisation to c99 style")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>