gpio: Revert regression in sysfs-gpio (gpiolib.c)

gpio: Revert regression in sysfs-gpio (gpiolib.c)

Some GPIO lines have stopped working after the patch
commit 9c51595a4fb8a ("gpio: Support GPIO controllers without pin-ranges")

And this has supposedly been fixed in the following patches
commit a38a3199de19a ("gpio: Avoid using pin ranges with !PINCTRL")
commit d171ee3158fd0 ("gpiolib: Don't free if pin ranges are not defined")

But an erratic behavior where some GPIO lines work while others do not work
has been introduced.

This patch reverts those changes so that the sysfs-gpio interface works
properly again.

Signed-off-by: Marcelo Roberto Jimenez <marcelo.jimenez@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>