net: lan743x_ptp: convert to ktime_get_clocktai_ts64

timekeeping_clocktai64() has been renamed to ktime_get_clocktai_ts64()
for consistency with the other ktime_get_* access functions.

Rename the new caller that has come up as well.

Question: this is the only ptp driver that sets the hardware time
to the current system time in TAI. Why does it do that?
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan743x_ptp.c

@@ -831,8 +831,7 @@ static void lan743x_ptp_sync_to_system_clock(struct lan743x_adapter *adapter)
 {
 	struct timespec64 ts;
 
-	memset(&ts, 0, sizeof(ts));
-	timekeeping_clocktai64(&ts);
+	ktime_get_clocktai_ts64(&ts);
 
 	lan743x_ptp_clock_set(adapter, ts.tv_sec, ts.tv_nsec, 0);
 }