[PATCH] drivers/isdn/i4l/: possible cleanups

This patch contains the following possible cleanups:
- make needlessly global code static
- remove the following unused global function:
  - isdn_audio.c: isdn_audio_2adpcm_flush
- remove the following unused struct:
  - isdn_net.c: isdn_concap_demand_dial_dops

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/isdn/i4l/isdn_common.h

@@ -41,7 +41,6 @@ extern int  isdn_get_free_channel(int, int, int, int, int, char *);
 extern int  isdn_writebuf_skb_stub(int, int, int, struct sk_buff *);
 extern int  register_isdn(isdn_if * i);
 extern int  isdn_msncmp( const char *,  const char *);
-extern int  isdn_add_channels(isdn_driver_t *, int, int, int);
 #if defined(ISDN_DEBUG_NET_DUMP) || defined(ISDN_DEBUG_MODEM_DUMP)
 extern void isdn_dumppkt(char *, u_char *, int, int);
 #endif