hwmon: (adm1026) Properly terminate sysfs groups

The missing NULL at the end of two sysfs file groups causes a kernel
crash when calling sysfs_create_group().
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

drivers/hwmon/adm1026.c

@@ -1624,6 +1624,7 @@ static struct attribute *adm1026_attributes_temp3[] = {
 	&dev_attr_temp3_crit_enable.attr,
 	&dev_attr_temp3_auto_point1_pwm.attr,
 	&dev_attr_temp3_auto_point2_pwm.attr,
+	NULL
 };
 
 static const struct attribute_group adm1026_group_temp3 = {
@@ -1639,6 +1640,7 @@ static struct attribute *adm1026_attributes_in8_9[] = {
 	&sensor_dev_attr_in9_max.dev_attr.attr,
 	&sensor_dev_attr_in9_min.dev_attr.attr,
 	&sensor_dev_attr_in9_alarm.dev_attr.attr,
+	NULL
 };
 
 static const struct attribute_group adm1026_group_in8_9 = {