serial: liteuart: don't set unused port fields

Remove regshift and iobase port fields, since they are unused
by the driver.
Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221123130500.1030189-5-gsomlo@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/liteuart.c

@@ -263,9 +263,7 @@ static int liteuart_probe(struct platform_device *pdev)
 	port->iotype = UPIO_MEM;
 	port->flags = UPF_BOOT_AUTOCONF;
 	port->ops = &liteuart_ops;
-	port->regshift = 2;
 	port->fifosize = 16;
-	port->iobase = 1;
 	port->type = PORT_UNKNOWN;
 	port->line = dev_id;
 	spin_lock_init(&port->lock);