syscalls: fix s390 at Linux v6.18

The S390 architecture was removed from the upstream Linux kernel in
Linux v6.19 with commit 8e0b986c59c6 ("s390: Remove compat support")
so freeze our s390 syscall table at Linux v6.18 until such time as
we remove s390 support in libseccomp.

Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Tom Hromatka (Oracle) <tom.hromatka@gmail.com>
(cherry picked from commit f24a52d)

Author: pcmoore

src/arch-syscall-validate

@@ -604,7 +604,8 @@ function dump_lib_riscv64() {
 #  Dump the architecture's syscall table to stdout.
 #
 function dump_sys_s390() {
-	dump_from_syscall_tbl "$1/arch/s390/kernel/syscalls/syscall.tbl" 32
+	# s390 removed in Linux v6.19, use historical data
+	cat ./syscalls.s390.csv
 }
 
 #