drivers: serial: jsm: Add Classic board UART structure

This commit adds the UART structure for the Digi Classic cards. This
code comes from the staging/dgnc driver.

Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed