ptp: replace getnstimeofday64() with ktime_get_real_ts64()

getnstimeofday64() is deprecated and getting replaced throughout
the kernel with ktime_get_*() based helpers for a more consistent
interface.

The two functions do the exact same thing, so this is just
a cosmetic change.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/ptp/ptp_chardev.c

@@ -221,7 +221,7 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
 		}
 		pct = &sysoff->ts[0];
 		for (i = 0; i < sysoff->n_samples; i++) {
-			getnstimeofday64(&ts);
+			ktime_get_real_ts64(&ts);
 			pct->sec = ts.tv_sec;
 			pct->nsec = ts.tv_nsec;
 			pct++;
@@ -230,7 +230,7 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
 			pct->nsec = ts.tv_nsec;
 			pct++;
 		}
-		getnstimeofday64(&ts);
+		ktime_get_real_ts64(&ts);
 		pct->sec = ts.tv_sec;
 		pct->nsec = ts.tv_nsec;
 		if (copy_to_user((void __user *)arg, sysoff, sizeof(*sysoff)))

drivers/ptp/ptp_qoriq.c

@@ -374,7 +374,7 @@ static int qoriq_ptp_probe(struct platform_device *dev)
 		pr_err("ioremap ptp registers failed\n");
 		goto no_ioremap;
 	}
-	getnstimeofday64(&now);
+	ktime_get_real_ts64(&now);
 	ptp_qoriq_settime(&qoriq_ptp->caps, &now);
 
 	tmr_ctrl =