mmc: sdhci-pci: fix 'Invalid iomem size' error message condition

The SDHCI standard defines a 256 byte register set but a device
that specifies a larger iomem region is not an error.  Alter the
message condition accordingly.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci-pci.c

@@ -1196,7 +1196,7 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
 		return ERR_PTR(-ENODEV);
 	}
 
-	if (pci_resource_len(pdev, bar) != 0x100) {
+	if (pci_resource_len(pdev, bar) < 0x100) {
 		dev_err(&pdev->dev, "Invalid iomem size. You may "
 			"experience problems.\n");
 	}