y2038: ipc: Use __kernel_timespec

This is a preparatation for changing over __kernel_timespec to 64-bit
times, which involves assigning new system call numbers for mq_timedsend(),
mq_timedreceive() and semtimedop() for compatibility with future y2038
proof user space.

The existing ABIs will remain available through compat code.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/ipc/sem.c b/ipc/sem.c
index 8935cd8..b951e25 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -2176,7 +2176,7 @@ static long do_semtimedop(int semid, struct sembuf __user *tsops,
 }
 
 long ksys_semtimedop(int semid, struct sembuf __user *tsops,
-		     unsigned int nsops, const struct timespec __user *timeout)
+		     unsigned int nsops, const struct __kernel_timespec __user *timeout)
 {
 	if (timeout) {
 		struct timespec64 ts;
@@ -2188,7 +2188,7 @@ long ksys_semtimedop(int semid, struct sembuf __user *tsops,
 }
 
 SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops,
-		unsigned int, nsops, const struct timespec __user *, timeout)
+		unsigned int, nsops, const struct __kernel_timespec __user *, timeout)
 {
 	return ksys_semtimedop(semid, tsops, nsops, timeout);
 }