thunderbolt: tb: Kernel-doc function headers should document their parameters

Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/tb.c:535: warning: Function parameter or member 'sw' not described in 'tb_scan_switch'
 drivers/thunderbolt/tb.c:551: warning: Function parameter or member 'port' not described in 'tb_scan_port'
 drivers/thunderbolt/tb.c:711: warning: Function parameter or member 'tb' not described in 'tb_free_invalid_tunnels'
 drivers/thunderbolt/tb.c:726: warning: Function parameter or member 'sw' not described in 'tb_free_unplugged_children'
 drivers/thunderbolt/tb.c:1129: warning: Function parameter or member 'work' not described in 'tb_handle_hotplug'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'tb' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'type' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'buf' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'size' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: expecting prototype for tb_schedule_hotplug_handler(). Prototype was for tb_handle_event() instead

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/tb.c

@@ -528,7 +528,7 @@ static int tb_create_usb3_tunnels(struct tb_switch *sw)
 
 static void tb_scan_port(struct tb_port *port);
 
-/**
+/*
  * tb_scan_switch() - scan for and initialize downstream switches
  */
 static void tb_scan_switch(struct tb_switch *sw)
@@ -544,7 +544,7 @@ static void tb_scan_switch(struct tb_switch *sw)
 	pm_runtime_put_autosuspend(&sw->dev);
 }
 
-/**
+/*
  * tb_scan_port() - check for and initialize switches below port
  */
 static void tb_scan_port(struct tb_port *port)
@@ -704,7 +704,7 @@ static void tb_deactivate_and_free_tunnel(struct tb_tunnel *tunnel)
 	tb_tunnel_free(tunnel);
 }
 
-/**
+/*
  * tb_free_invalid_tunnels() - destroy tunnels of devices that have gone away
  */
 static void tb_free_invalid_tunnels(struct tb *tb)
@@ -719,7 +719,7 @@ static void tb_free_invalid_tunnels(struct tb *tb)
 	}
 }
 
-/**
+/*
  * tb_free_unplugged_children() - traverse hierarchy and free unplugged switches
  */
 static void tb_free_unplugged_children(struct tb_switch *sw)
@@ -1120,7 +1120,7 @@ static int tb_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd)
 
 /* hotplug handling */
 
-/**
+/*
  * tb_handle_hotplug() - handle hotplug event
  *
  * Executes on tb->wq.
@@ -1229,7 +1229,7 @@ static void tb_handle_hotplug(struct work_struct *work)
 	kfree(ev);
 }
 
-/**
+/*
  * tb_schedule_hotplug_handler() - callback function for the control channel
  *
  * Delegates to tb_handle_hotplug.