[PATCH] USB: small cleanups

This patch contains the following cleanups:
- make needlessly global functions static
- every file should #include the headers containing the prototypes for
  it's global functions

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/atm/usbatm.c

@@ -646,14 +646,14 @@ static void usbatm_destroy_instance(struct kref *kref)
 	kfree(instance);
 }
 
-void usbatm_get_instance(struct usbatm_data *instance)
+static void usbatm_get_instance(struct usbatm_data *instance)
 {
 	dbg("%s", __func__);
 
 	kref_get(&instance->refcount);
 }
 
-void usbatm_put_instance(struct usbatm_data *instance)
+static void usbatm_put_instance(struct usbatm_data *instance)
 {
 	dbg("%s", __func__);
 

drivers/usb/serial/io_ti.c

@@ -2843,7 +2843,7 @@ static struct edge_buf *edge_buf_alloc(unsigned int size)
  * Free the buffer and all associated memory.
  */
 
-void edge_buf_free(struct edge_buf *eb)
+static void edge_buf_free(struct edge_buf *eb)
 {
 	if (eb) {
 		kfree(eb->buf_buf);