fix mtk+ubx gps driver: use px4_clock_settime instead of clock_settime

src/drivers/gps/mtk.cpp

@@ -276,7 +276,7 @@ MTK::handle_message(gps_mtk_packet_t &packet)
 		ts.tv_sec = epoch;
 		ts.tv_nsec = timeinfo_conversion_temp * 1000000ULL;
 
-		if (clock_settime(CLOCK_REALTIME, &ts)) {
+		if (px4_clock_settime(CLOCK_REALTIME, &ts)) {
 			warn("failed setting clock");
 		}
 

src/drivers/gps/ubx.cpp

@@ -875,7 +875,7 @@ UBX::payload_rx_done(void)
 				ts.tv_sec = epoch;
 				ts.tv_nsec = _buf.payload_rx_nav_pvt.nano;
 
-				if (clock_settime(CLOCK_REALTIME, &ts)) {
+				if (px4_clock_settime(CLOCK_REALTIME, &ts)) {
 					warn("failed setting clock");
 				}
 
@@ -973,7 +973,7 @@ UBX::payload_rx_done(void)
 				ts.tv_sec = epoch;
 				ts.tv_nsec = _buf.payload_rx_nav_timeutc.nano;
 
-				if (clock_settime(CLOCK_REALTIME, &ts)) {
+				if (px4_clock_settime(CLOCK_REALTIME, &ts)) {
 					warn("failed setting clock");
 				}