gpio: Fix undefined lock_dep_class

The struct is wrong, this is named lock_class_key.

Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2017-11-08 21:40:41 +01:00
commit ec47873e1f