serial: samsung: use port->fifosize instead of hardcoded values

Hardcoded FIFO size can cause hardware performance limitation.
Using real size value provides better FIFO usage.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed