staging: comedi: 8253.h: use usual style for single-line comments

Use one space after the opening and one space before the closing of the
comment.
Signed-off-by: NIan Abbott <abbotti@mev.co.uk>
Reviewed-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/8253.h

@@ -201,7 +201,7 @@ static inline int i8254_mm_load(void __iomem *base_address,
 	return 0;
 }
 
-/* Returns 16 bit counter value, should work for 8253 also.*/
+/* Returns 16 bit counter value, should work for 8253 also. */
 static inline int i8254_read(unsigned long base_address, unsigned int regshift,
 			     unsigned int counter_number)
 {