ipc: fix semtimedop for generic 32-bit architectures

As Vincent noticed, the y2038 conversion of semtimedop in linux-5.1
broke when commit 00bf25d693 ("y2038: use time32 syscall names on
32-bit") changed all system calls on all architectures that take
a 32-bit time_t to point to the _time32 implementation, but left out
semtimedop in the asm-generic header.

This affects all 32-bit architectures using asm-generic/unistd.h:
h8300, unicore32, openrisc, nios2, hexagon, c6x, arc, nds32 and csky.

The notable exception is riscv32, which has dropped support for the
time32 system calls entirely.

Reported-by: Vincent Chen <[email protected]>
Cc: [email protected]
Cc: Vincent Chen <[email protected]>
Cc: Greentime Hu <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Guan Xuetao <[email protected]>
Cc: Stafford Horne <[email protected]>
Cc: Jonas Bonn <[email protected]>
Cc: Stefan Kristiansson <[email protected]>
Cc: Ley Foon Tan <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Mark Salter <[email protected]>
Cc: Aurelien Jacquiot <[email protected]>
Cc: Guo Ren <[email protected]>
Fixes: 00bf25d693 ("y2038: use time32 syscall names on 32-bit")
Signed-off-by: Arnd Bergmann <[email protected]>

include/uapi/asm-generic/unistd.h

@@ -569,7 +569,7 @@ __SYSCALL(__NR_semget, sys_semget)
 __SC_COMP(__NR_semctl, sys_semctl, compat_sys_semctl)
 #if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32
 #define __NR_semtimedop 192
-__SC_COMP(__NR_semtimedop, sys_semtimedop, sys_semtimedop_time32)
+__SC_3264(__NR_semtimedop, sys_semtimedop_time32, sys_semtimedop)
 #endif
 #define __NR_semop 193
 __SYSCALL(__NR_semop, sys_semop)