If there are more then one 4/8-port board jsm_uart_port_init
allocate a line numbers of the second and further boards
from range of previous one.

This patch fixed the problem.
Signed-off-by: NAlexander Y. Fomichev <git.user@gmail.com>

[printks fixed to add jsm: ]
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>