Revert "cypress-touchkey: remove backlight timeout feature"

This reverts commit 57fa7640c1726f2846d609495ed5130ed5032d11.

(cherry picked from commit 89e28964e0ec68f5d5b584f77c9623708e64c054)
cypress-touchkey : add sysfs interface to enable/disable lighting hardwarekey backlight on screen touch (Yank555.lu)

(cherry picked from commit 2037bcfb364052e716bded4b5329c7fe31d57d44)
cypress-touchkey : add sysfs interface to enable/disable lighting hardwarekey backlight on screen touch (Yank555.lu)

- prevent h/w keys to light up on late_resume as well if disabled

(cherry picked from commit bc053beb636e7b553bd937e1271cb9a1814e0ac2)
Revert "cypress: report led status via sysfs"

This reverts commit 186412c9d4ac2be1c6cba7470b78355a7adb9ce6.

(cherry picked from commit 84707fa5c8a9ac24e5d0e34c468832cb5e6f4671)
Revert "isa1200: move sysfs node for pwm level"

This reverts commit c70f251e34d3178c68bf3c88e3d620d3917d331d.

(cherry picked from commit 8fb6417344ddebf0cc8af9d5638d5fd9aa0ada21)
Revert "smdk4412: max77693_haptic: move sysfs node"

This reverts commit 33ef6f8cf6b8105c016aacf0a1e3cde1d238a431.

(cherry picked from commit 6837969254d3f3e9b18ebdff2f0f7adf29eb7f05)
Revert "max8997: move sysfs node for pwm level"

This reverts commit f98b67c6e31214dd28f32239e1df4d96a5b6e94a.

(cherry picked from commit 77bf7d779a509b9c0260358076114d5b57ffa34a)