time: Fixup 32bit xtime_lock mismatch

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

kernel/time.c

@@ -662,9 +662,9 @@ u64 get_jiffies_64(void)
 	u64 ret;
 
 	do {
-		seq = read_seqbegin(&xtime_lock);
+		seq = read_atomic_seqbegin(&xtime_lock);
 		ret = jiffies_64;
-	} while (read_seqretry(&xtime_lock, seq));
+	} while (read_atomic_seqretry(&xtime_lock, seq));
 	return ret;
 }
 EXPORT_SYMBOL(get_jiffies_64);