ga510.py: add 'reset' after clone error and upload

The radio has to be power cycled after upload or clone errors. This
patch fixes issue by adding missing 'resets' to close communicatons.

chirp/drivers/ga510.py

@@ -56,6 +56,7 @@ def start_program(radio):
     if not ack.endswith(b'\x06'):
         LOG.debug('Ack was %r' % ack)
         raise errors.RadioError('Radio did not respond to clone request')
+        reset(radio)
 
     radio.pipe.write(b'F')
 
@@ -85,9 +86,11 @@ def do_download(radio):
         if raddr != addr:
             raise errors.RadioError('Radio send address %04x, expected %04x' %
                                     (raddr, addr))
+            reset(radio)
         if rlen != 0x40 or len(block) != 0x40:
             raise errors.RadioError('Radio sent %02x (%02x) bytes, '
                                     'expected %02x' % (rlen, len(block), 0x40))
+            reset(radio)
 
         data += block
 
@@ -119,10 +122,13 @@ def do_upload(radio):
         ack = radio.pipe.read(1)
         if ack != b'\x06':
             raise errors.RadioError('Radio refused block at addr %04x' % addr)
+            reset(radio)
 
         s.cur = addr
         radio.status_fn(s)
 
+    reset(radio)
+
 
 BASE_FORMAT = """
 struct {