[WATCHDOG] pci: use pci_ioremap_bar() in drivers/watchdog

Use the newly introduced pci_ioremap_bar() function in drivers/watchdog.
pci_ioremap_bar() just takes a pci device and a bar number, with the goal
of making it really hard to get wrong, while also having a central place
to stick sanity checks.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

drivers/watchdog/i6300esb.c

@@ -394,8 +394,7 @@ static unsigned char __init esb_getdevice(void)
 			goto err_disable;
 		}
 
-		BASEADDR = ioremap(pci_resource_start(esb_pci, 0),
-				   pci_resource_len(esb_pci, 0));
+		BASEADDR = pci_ioremap_bar(esb_pci, 0);
 		if (BASEADDR == NULL) {
 			/* Something's wrong here, BASEADDR has to be set */
 			printk(KERN_ERR PFX "failed to get BASEADDR\n");