s390 supports ARCH_HAS_SET_DIRECT_MAP, therefore wire up the
memfd_secret system call, which depends on it.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
 444  common    landlock_create_ruleset sys_landlock_create_ruleset     sys_landlock_create_ruleset
 445  common    landlock_add_rule       sys_landlock_add_rule           sys_landlock_add_rule
 446  common    landlock_restrict_self  sys_landlock_restrict_self      sys_landlock_restrict_self
-# 447 reserved for memfd_secret
+447  common    memfd_secret            sys_memfd_secret                sys_memfd_secret
 448  common    process_mrelease        sys_process_mrelease            sys_process_mrelease
 449  common    futex_waitv             sys_futex_waitv                 sys_futex_waitv
 450  common    set_mempolicy_home_node sys_set_mempolicy_home_node     sys_set_mempolicy_home_node