Bluetooth: Use switch statement for Intel hardware variants

Multiple new hardware variants are planned and the simple if statement
would get really complicated and unreadable. So instead replace it with
a simple switch statement.

The change is applied to both USB and UART.

Based-on-patch-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 1c8094e..b599be8 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2024,13 +2024,17 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 		return -EINVAL;
 	}
 
-	/* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
-	 * and 0x0c (WsP) are supported by this firmware loading method.
+	/* Check for supported iBT hardware variants of this firmware
+	 * loading method.
 	 *
 	 * This check has been put in place to ensure correct forward
 	 * compatibility options when newer hardware variants come along.
 	 */
-	if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
+	switch (ver.hw_variant) {
+	case 0x0b:	/* SfP */
+	case 0x0c:	/* WsP */
+		break;
+	default:
 		BT_ERR("%s: Unsupported Intel hardware variant (%u)",
 		       hdev->name, ver.hw_variant);
 		return -EINVAL;