Bluetooth: hci_intel: Fix firmware file name to use hw_variant

The format of Intel Bluetooth firmware for bootloader product is
ibt-<hw_variant>-<device_revision_id>.sfi and .ddc.

This patch uses a hw_variant value read from the device during
runtime to form the firmware filenames instead of using a constant
value, so it can support multiple prouducts.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/hci_intel.c

@@ -704,10 +704,13 @@ static int intel_setup(struct hci_uart *hu)
 	/* With this Intel bootloader only the hardware variant and device
 	 * revision information are used to select the right firmware.
 	 *
-	 * Currently this bootloader support is limited to hardware variant
-	 * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
+	 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
+	 *
+	 * Currently the supported hardware variants are:
+	 *   11 (0x0b) for iBT 3.0 (LnP/SfP)
 	 */
-	snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
+	snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
+		le16_to_cpu(ver.hw_variant),
 		le16_to_cpu(params->dev_revid));
 
 	err = request_firmware(&fw, fwname, &hdev->dev);
@@ -721,7 +724,8 @@ static int intel_setup(struct hci_uart *hu)
 	bt_dev_info(hdev, "Found device firmware: %s", fwname);
 
 	/* Save the DDC file name for later */
-	snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
+	snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
+		le16_to_cpu(ver.hw_variant),
 		le16_to_cpu(params->dev_revid));
 
 	kfree_skb(skb);