[netdrvr] Remove Becker-template 'io_size' member, when invariant

Becker-derived drivers often have the 'io_size' member in their chip
info struct, indicating the minimum required size of the I/O resource
(usually a PCI BAR).  For many situations, this number is either
constant or irrelevant (due to pci_iomap convenience behavior).

This change removes the io_size invariant member, and replaces it with a
compile-time constant.

Drivers updated: fealnx, gt96100eth, winbond-840, yellowfin

Additionally,
- gt96100eth: unused 'drv_flags' removed from gt96100eth
- winbond-840: unused struct match_info removed
- winbond-840: mark pci_id_tbl[] const, __devinitdata

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/gt96100eth.c b/drivers/net/gt96100eth.c
index 49dacc6..2b4db74 100644
--- a/drivers/net/gt96100eth.c
+++ b/drivers/net/gt96100eth.c
@@ -699,7 +699,6 @@
 	memset(gp, 0, sizeof(*gp)); // clear it
 
 	gp->port_num = port_num;
-	gp->io_size = GT96100_ETH_IO_SIZE;
 	gp->port_offset = port_num * GT96100_ETH_IO_SIZE;
 	gp->phy_addr = phy_addr;
 	gp->chip_rev = chip_rev;
@@ -1531,7 +1530,7 @@
 				+ sizeof(gt96100_td_t) * TX_RING_SIZE,
 				gp->rx_ring);
 			free_netdev(gtif->dev);
-			release_region(gtif->iobase, gp->io_size);
+			release_region(gtif->iobase, GT96100_ETH_IO_SIZE);
 		}
 	}
 }