e100, fix iomap read

There were 2 omitted readb's used on an iomap space. eliminate them
by using ioread8 instead.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Bruce Allan <bruce.w.allan@intel.com>
Cc: PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com>
Cc: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/e100.c

@@ -1838,7 +1838,7 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
 		if ((le16_to_cpu(rfd->command) & cb_el) &&
 		    (RU_RUNNING == nic->ru_running))
 
-			if (readb(&nic->csr->scb.status) & rus_no_res)
+			if (ioread8(&nic->csr->scb.status) & rus_no_res)
 				nic->ru_running = RU_SUSPENDED;
 		return -ENODATA;
 	}
@@ -1861,7 +1861,7 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
 	if ((le16_to_cpu(rfd->command) & cb_el) &&
 	    (RU_RUNNING == nic->ru_running)) {
 
-	    if (readb(&nic->csr->scb.status) & rus_no_res)
+	    if (ioread8(&nic->csr->scb.status) & rus_no_res)
 		nic->ru_running = RU_SUSPENDED;
 	}