system: update the ABI whitelist for the seccomp() syscall

Special thanks to those on the "Reported-by" line who helped test
this.

Reported-by: Marcin Juszkiewicz <mjuszkiewicz@redhat.com>
Reported-by: than <than@redhat.com>
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

src/system.c

@@ -65,6 +65,12 @@ int sys_chk_seccomp_syscall(void)
 	/* architecture whitelist */
 	switch (arch_def_native->token) {
 	case SCMP_ARCH_X86_64:
+	case SCMP_ARCH_ARM:
+	case SCMP_ARCH_AARCH64:
+	case SCMP_ARCH_PPC64:
+	case SCMP_ARCH_PPC64LE:
+	case SCMP_ARCH_S390:
+	case SCMP_ARCH_S390X:
 		break;
 	default:
 		goto unsupported;