Fix bug with usbtc08.py

Author: neil.hamilton

picosdk/usbtc08.py

@@ -28,12 +28,12 @@ def __init__(self):
 class USBTC08_INFO(Structure):
     _pack_ = 1
     _fields_ = [("size", c_int16),
-                ("DriverVersion", c_int8),
+                ("DriverVersion", c_char * 12),
                 ("PicoppVersion", c_int16),
 				("HardwareVersion", c_int16),
 				("Variant", c_int16),
-				("szSerial[USBTC08_MAX_SERIAL_CHAR]", c_int8),
-				("szCalDate[USBTC08_MAX_DATE_CHARS]", c_int8)]
+				("szSerial[USBTC08_MAX_SERIAL_CHAR]", c_char * 11),
+				("szCalDate[USBTC08_MAX_DATE_CHARS]", c_char * 9)]
 
 doc = """ int16_t usb_tc08_open_unit
     (