backports: make BACKPORT_BUILD_LEDS depend on LEDS_CLASS=n

Somehow !LEDS_CLASS and LEDS_CLASS=n seem to be different (likely
because LEDS_CLASS is tristate, but BACKPORT_BUILD_LEDS is just a
bool), so use LEDS_CLASS=n to fix build issues in other cases on
certain kernel configurations.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
1 file changed