IB/mthca: Fix printk format used for firmware version in warning

When warning about out-of-date firmware, current mthca code messes up
the formatting of the version if the subminor doesn't have three
digits.  It doesn't fill the field with 0s so we end up with:

    ib_mthca 0000:0b:00.0: HCA FW version 1.1.  0 is old (1.2.  0 is current).

Change the format from "%3d" to "%03d" to get the right thing printed.
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/mthca/mthca_main.c

@@ -1147,7 +1147,7 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
 		goto err_cmd;
 
 	if (mdev->fw_ver < mthca_hca_table[hca_type].latest_fw) {
-		mthca_warn(mdev, "HCA FW version %d.%d.%3d is old (%d.%d.%3d is current).\n",
+		mthca_warn(mdev, "HCA FW version %d.%d.%03d is old (%d.%d.%03d is current).\n",
 			   (int) (mdev->fw_ver >> 32), (int) (mdev->fw_ver >> 16) & 0xffff,
 			   (int) (mdev->fw_ver & 0xffff),
 			   (int) (mthca_hca_table[hca_type].latest_fw >> 32),