tty: move obsolete and broken tty drivers to drivers/staging/tty/

As planned by Arnd Bergmann, this moves the following drivers to the
drivers/staging/tty/ directory where they will be removed after 2.6.41
if no one steps up to claim them.
	epca
	epca
	ip2
	istallion
	riscom8
	serial167
	specialix
	stallion

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 5c8fcfc..fb1fc4e 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -41,6 +41,8 @@
 
 if !STAGING_EXCLUDE_BUILD
 
+source "drivers/staging/tty/Kconfig"
+
 source "drivers/staging/et131x/Kconfig"
 
 source "drivers/staging/slicoss/Kconfig"