Staging: comedi: serial2002: decrease stack usage

512 bytes of stack can be saved in serial_2002_open() by modifying
'struct config_t'.  A short int suffices for the 'kind' and 'bits'
members.  (Actually, a char would suffice, but wouldn't save any more
stack than a short int.)
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/serial2002.c

@@ -404,8 +404,8 @@ static void serial_2002_open(struct comedi_device *dev)
 	} else {
 		struct config_t {
 
-			int kind;
-			int bits;
+			short int kind;
+			short int bits;
 			int min;
 			int max;
 		};