LED core takes care of handling failed calls to thingm_let_set.
- print error message in set_brightness_delayed or
- pass error to caller in led_set_brightness_sync
Also the error message here doesn't provide any hint what actually
went wrong. Therefore remove it.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: NBenjamin Tissoires <benjamin.tissoires@rehat.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>