[PATCH 5/9] staging: dgap: introduce dgap_tty_unregister()

[Dan Carpenter]

On Fri, Jun 13, 2014 at 04:41:47PM +0900, Daeseok Youn wrote:
> dgap_tty_unregister() will unregister serial_driver
> and print_driver, and also free related variables.
> 

Introducing a static function without a caller will cause a GCC warning
about unused functions.

Fold 5,7 and 8 together into one patch.  This is still "one thing per
patch" because they can't be done separately.

regards,
dan carpenter