thunderbolt: Rename tunnel_pci to tunnel

In order to tunnel non-PCIe traffic as well rename tunnel_pci.[ch] to
tunnel.[ch] to reflect this fact. No functional changes.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/Makefile

 obj-${CONFIG_THUNDERBOLT} := thunderbolt.o
-thunderbolt-objs := nhi.o ctl.o tb.o switch.o cap.o path.o tunnel_pci.o eeprom.o
+thunderbolt-objs := nhi.o ctl.o tb.o switch.o cap.o path.o tunnel.o eeprom.o
 thunderbolt-objs += domain.o dma_port.o icm.o property.o xdomain.o lc.o

drivers/thunderbolt/tb.c

@@ -12,7 +12,7 @@
 
 #include "tb.h"
 #include "tb_regs.h"
-#include "tunnel_pci.h"
+#include "tunnel.h"
 
 /**
  * struct tb_cm - Simple Thunderbolt connection manager

drivers/thunderbolt/tunnel_pci.c → drivers/thunderbolt/tunnel.c

 // SPDX-License-Identifier: GPL-2.0
 /*
- * Thunderbolt Cactus Ridge driver - PCIe tunnel
+ * Thunderbolt Cactus Ridge driver - Tunneling support
  *
  * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
  */
@@ -8,7 +8,7 @@
 #include <linux/slab.h>
 #include <linux/list.h>
 
-#include "tunnel_pci.h"
+#include "tunnel.h"
 #include "tb.h"
 
 #define __TB_TUNNEL_PRINT(level, tunnel, fmt, arg...)                   \

drivers/thunderbolt/tunnel_pci.h → drivers/thunderbolt/tunnel.h

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Thunderbolt Cactus Ridge driver - PCIe tunnel
+ * Thunderbolt Cactus Ridge driver - Tunneling support
  *
  * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
  */
 
-#ifndef TB_PCI_H_
-#define TB_PCI_H_
+#ifndef TB_TUNNEL_H_
+#define TB_TUNNEL_H_
 
 #include "tb.h"