This changes the ide-disk LED trigger to the generic disk-activity as
ide-disk trigger was removed in upstream commit eb25cb9956cc ("leds:
convert IDE trigger to common disk trigger").
Signed-off-by: Thomas Albers <thomas.gameiro@googlemail.com>
[split into separate commit, commit description facelift]
Signed-off-by: Petr Štetiar <ynezz@true.cz>