ntp: increase socket resume timeout to 1 millisecond

This seems to work significantly better on some hardware and is still
shorter than burst interval at the minimum configurable poll.

ntp_io_linux.c

@@ -91,7 +91,7 @@ static int permanent_ts_options;
    suspend reading of packets from the receive queue until a HW transmit
    timestamp is received from the error queue or a timeout reached. */
 
-#define RESUME_TIMEOUT 200.0e-6
+#define RESUME_TIMEOUT 0.001
 
 struct HwTsSocket {
   int sock_fd;