Revert "Revert "max8997: move sysfs node for pwm level""

This reverts commit 9c2bf7bda442e4211558d6cf24c3147ab3a90f50.
Revert "Revert "smdk4412: max77693_haptic: move sysfs node""

This reverts commit 7e91d9311760ae7a07ee59071e3a59ac03614f83.
Revert "Revert "isa1200: move sysfs node for pwm level""

This reverts commit 19059d16bf81b6f87f75dbca5232d813a028dd1e.
Revert "Revert "cypress: report led status via sysfs""

This reverts commit 32d28739a8cc149c1a0cce73fd924b1ee48d48fe.
Revert "cypress-touchkey : add sysfs interface to enable/disable lighting hardwarekey backlight on screen touch (Yank555.lu)"

This reverts commit 25b041a9af1da32f3a1742ae03991828a71a49aa.
Revert "cypress-touchkey : add sysfs interface to enable/disable lighting hardwarekey backlight on screen touch (Yank555.lu)"

This reverts commit 7c595d724c9023186e9f9a7ce09f06bb1bfbc4d9.
Revert "Revert "cypress-touchkey: remove backlight timeout feature""

This reverts commit ce98394e3316560f54e6dcd6cc518f96849c8bc7.