staging: comedi: ni_labpc.h: checkpatch.pl cleanup (unnecessary space)

Fix the checkpatch.pl warning:

WARNING: Unnecessary space before function pointer arguments
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/ni_labpc.h

@@ -79,8 +79,8 @@ struct labpc_private {
 	 * function pointers so we can use inb/outb or readb/writeb as
 	 * appropriate
 	 */
-	unsigned int (*read_byte) (unsigned long address);
-	void (*write_byte) (unsigned int byte, unsigned long address);
+	unsigned int (*read_byte)(unsigned long address);
+	void (*write_byte)(unsigned int byte, unsigned long address);
 };
 
 int labpc_common_attach(struct comedi_device *dev,