leds: leds-hp6xx: Use devm_led_classdev_register
leds: leds-hp6xx: Use devm_led_classdev_register

Use resource-managed function devm_led_classdev_register
instead of led_classdev_register to simplify error path.
An unnecessary check of ret is replaced with a direct return
Also, remove redundant hp6xxled_remove.

Signed-off-by: Muhammad Falak R Wani <2f5454d1df82a8c967e65c7fabca0c288c298f41@gmail.com>
Signed-off-by: Jacek Anaszewski <6a953cb1c532e2765a42e582ecefff5a01106214@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs