[PATCH] 8250: Fix empty port registration

My latest 8250 patch prevented registration of "empty" ports (ports that
have a 0 iobase in the static table). Unfortunately, some archs seem to rely
on this, and so broke. This patch reverts that part of the patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/serial/8250.c

@@ -2001,13 +2001,6 @@ serial8250_register_ports(struct uart_driver *drv, struct device *dev)
 	for (i = 0; i < UART_NR; i++) {
 		struct uart_8250_port *up = &serial8250_ports[i];
 
-		/* Don't register "empty" ports, setting "ops" on them
-		 * makes the console driver "setup" routine to succeed,
-		 * which is wrong. --BenH.
-		 */
-		if (!up->port.iobase)
-			continue;
-
 		up->port.line = i;
 		up->port.ops = &serial8250_pops;
 		up->port.dev = dev;