usb: pmci: mctp: samples: Fix issues from CI checks

Add license header to usb_host_tester.py, fix typo in usbd_mctp.h and rogue
space in usbd_mctp.h.

Signed-off-by: Eric Ocasio <[email protected]>

Author: eric-ocasio-nxp

include/zephyr/usb/class/usbd_mctp.h

@@ -7,7 +7,7 @@
 
 /**
  * @file
- * @brief MCTP over USB Protocol Endpoint Deivce Class public header
+ * @brief MCTP over USB Protocol Endpoint Device Class public header
  *
  * This API is currently considered experimental.
  */

samples/modules/pmci/mctp/usb_endpoint/usb_host_tester.py

@@ -1,3 +1,8 @@
+#!/usr/bin/env python3
+
+# Copyright 2025 NXP
+# SPDX-License-Identifier: Apache-2.0
+
 import usb.core
 import usb.util
 

subsys/usb/device_next/class/usbd_mctp.c

@@ -360,7 +360,7 @@ int usbd_mctp_send(const struct usbd_mctp_inst *const inst, const void *const da
 		.desc = &usbd_mctp_desc_##n,						\
 		.fs_desc = usbd_mctp_fs_desc_##n,					\
 		.hs_desc = usbd_mctp_hs_desc_##n,					\
-		.inst_idx = n 								\
+		.inst_idx = n								\
 	};										\
 											\
 	USBD_DEFINE_CLASS(mctp_##n, &usbd_mctp_api, &usbd_mctp_ctx_##n, NULL);