s390/ipl: add missing IPL_TYPE_ECKD_DUMP case to ipl_init()

Add missing IPL_TYPE_ECKD_DUMP case to ipl_init() creating
ECKD ipl device attribute group similar to IPL_TYPE_ECKD case.
Commit e2d2a296 ("s390/ipl: add eckd dump support") should
have had it from the beginning.

Fixes: e2d2a296 ("s390/ipl: add eckd dump support")
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

arch/s390/kernel/ipl.c

@@ -666,6 +666,7 @@ static int __init ipl_init(void)
 						&ipl_ccw_attr_group_lpar);
 		break;
 	case IPL_TYPE_ECKD:
+	case IPL_TYPE_ECKD_DUMP:
 		rc = sysfs_create_group(&ipl_kset->kobj, &ipl_eckd_attr_group);
 		break;
 	case IPL_TYPE_FCP: