gpiolib: cdev: rename 'filep' and 'filp' to 'file' to be consistent with other use

Rename 'filep' and 'filp' to 'file' to be consistent with other use
and improve readability.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
1 file changed