tty: serial: uartlite: Document uartlite_data in kernel-doc style

Use @ and - to conform with kernel-doc style.

Reported-by: kernel test robot <yujie.liu@intel.com>
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Link: https://lore.kernel.org/r/20231106152428.3641883-1-sean.anderson@seco.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>