PNP: skip UNSET MEM resources as well as DISABLED ones

We don't need to reserve "unset" resources. Trying to reserve
them results in messages like this, which are ugly but harmless:

system 00:08: iomem range 0x0-0x0 could not be reserved

Future PNP patches will remove use of IORESOURCE_UNSET, but
we still need it for now.

Signed-off-by: Bjorn Helgaas <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/pnp/system.c

···
 	}
 
 	for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
-		if (res->flags & IORESOURCE_DISABLED)
+		if (res->flags & (IORESOURCE_UNSET | IORESOURCE_DISABLED))
 			continue;
 
 		reserve_range(dev, res->start, res->end, 0);