Update syscall lists for Linux 6.4

Linux 6.4 adds the riscv_hwprobe syscall on riscv and enables
memfd_secret on s390.  Update syscall-names.list and regenerate the
arch-syscall.h headers with build-many-glibcs.py update-syscalls.

Tested with build-many-glibcs.py.

sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h

@@ -198,6 +198,7 @@
 #define __NR_request_key 218
 #define __NR_restart_syscall 128
 #define __NR_riscv_flush_icache 259
+#define __NR_riscv_hwprobe 258
 #define __NR_rseq 293
 #define __NR_rt_sigaction 134
 #define __NR_rt_sigpending 136

sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h

@@ -205,6 +205,7 @@
 #define __NR_request_key 218
 #define __NR_restart_syscall 128
 #define __NR_riscv_flush_icache 259
+#define __NR_riscv_hwprobe 258
 #define __NR_rseq 293
 #define __NR_rt_sigaction 134
 #define __NR_rt_sigpending 136

sysdeps/unix/sysv/linux/s390/s390-32/arch-syscall.h

@@ -178,6 +178,7 @@
 #define __NR_mbind 268
 #define __NR_membarrier 356
 #define __NR_memfd_create 350
+#define __NR_memfd_secret 447
 #define __NR_migrate_pages 287
 #define __NR_mincore 218
 #define __NR_mkdir 39

sysdeps/unix/sysv/linux/s390/s390-64/arch-syscall.h

@@ -152,6 +152,7 @@
 #define __NR_mbind 268
 #define __NR_membarrier 356
 #define __NR_memfd_create 350
+#define __NR_memfd_secret 447
 #define __NR_migrate_pages 287
 #define __NR_mincore 218
 #define __NR_mkdir 39

sysdeps/unix/sysv/linux/syscall-names.list

@@ -21,8 +21,8 @@
 # This file can list all potential system calls.  The names are only
 # used if the installed kernel headers also provide them.
 
-# The list of system calls is current as of Linux 6.3.
+# The list of system calls is current as of Linux 6.4.
-kernel 6.3
+kernel 6.4
 
 FAST_atomic_update
 FAST_cmpxchg
@@ -477,6 +477,7 @@ renameat2
 request_key
 restart_syscall
 riscv_flush_icache
+riscv_hwprobe
 rmdir
 rseq
 rt_sigaction