tmd710: Fix clone mode at lower speeds

For these radios, if the baud rate is too low, the 250ms default
serial timeout will result in failure to read entire blocks right
off the bat. Increase it so it's always reasonable.

chirp/drivers/tmd710.py

@@ -83,6 +83,10 @@ def _connect_radio(radio):
     global BAUD
     xid = "D710" + radio.SHORT
     resp = kenwood_live.KenwoodLiveRadio(None).get_id(radio.pipe)
+    # If we are running at 9600 baud (the default), then the default
+    # timeout of 250ms is too short for some clone-mode responses. 1s should
+    # always be enough.
+    radio.pipe.timeout = 1
     BAUD = radio.pipe.baudrate      # As detected by kenwood_live
     LOG.debug("Got [%s] at %i Baud." % (resp, BAUD))
     resp = resp[3:]     # Strip "ID " prefix