ISDN4Linux: fix maturity label

According to the definitions recently posted on LKML, the maturity label
for the ISDN4Linux subsystem is wrong.  This patch corrects it and also
clarifies the accompanying help text a bit.
Signed-off-by: NTilman Schmidt <tilman@imap.cc>
Acked-by: NKarsten Keil <kkeil@suse.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/isdn/Kconfig

@@ -26,9 +26,9 @@ menu "Old ISDN4Linux"
 	depends on NET && ISDN
 
 config ISDN_I4L
-	tristate "Old ISDN4Linux (obsolete)"
+	tristate "Old ISDN4Linux (deprecated)"
 	---help---
-	  This driver allows you to use an ISDN-card for networking
+	  This driver allows you to use an ISDN adapter for networking
 	  connections and as dialin/out device.  The isdn-tty's have a built
 	  in AT-compatible modem emulator.  Network devices support autodial,
 	  channel-bundling, callback and caller-authentication without having
@@ -39,8 +39,9 @@ config ISDN_I4L
 
 	  ISDN support in the linux kernel is moving towards a new API,
 	  called CAPI (Common ISDN Application Programming Interface).
-	  Therefore the old ISDN4Linux layer is becoming obsolete. It is 
-	  still usable, though, if you select this option.
+	  Therefore the old ISDN4Linux layer will eventually become obsolete.
+	  It is still available, though, for use with adapters that are not
+	  supported by the new CAPI subsystem yet.
 
 if ISDN_I4L
 source "drivers/isdn/i4l/Kconfig"