net: lwm2m: Fixed missing _CONFIG prefix

Fixed missing '_CONFIG' prefix when enabling
LWM2M_FIRMWARE_UPDATE_OBJ_SUPPORT_MULTIPLE and
CONFIG_LWM2M_FIRMWARE_UPDATE_OBJ_INSTANCE_COUNT through prj.conf

Signed-off-by: Henrico Brom <henrico.brom@vention.nl>
1 file changed