3com: make 3c59x depend on HAS_IOPORT

The 3com driver for 3c59x requires ioport_map. Since not all
architectures support IO port mapping make 3c59x dependent on HAS_IOPORT.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/3com/Kconfig b/drivers/net/ethernet/3com/Kconfig
index bad4fa6..eb56174 100644
--- a/drivers/net/ethernet/3com/Kconfig
+++ b/drivers/net/ethernet/3com/Kconfig
@@ -80,7 +80,7 @@
 
 config VORTEX
 	tristate "3c590/3c900 series (592/595/597) \"Vortex/Boomerang\" support"
-	depends on (PCI || EISA)
+	depends on (PCI || EISA) && HAS_IOPORT
 	select NET_CORE
 	select MII
 	---help---