isdn: hdlc: move into mISDN

The last remnant of the isdn4linux interface is now the isdnhdlc
support, used by the netjet driver. Move it next to that driver.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/isdn/Makefile

@@ -3,7 +3,6 @@
 
 # Object files in subdirectories
 
-obj-$(CONFIG_ISDN_I4L)			+= i4l/
 obj-$(CONFIG_ISDN_CAPI)			+= capi/
 obj-$(CONFIG_MISDN)			+= mISDN/
 obj-$(CONFIG_ISDN)			+= hardware/

drivers/isdn/hardware/mISDN/Kconfig

@@ -79,11 +79,14 @@ config MISDN_NETJET
 	depends on PCI
 	depends on TTY
 	select MISDN_IPAC
-	select ISDN_HDLC
-	select ISDN_I4L
+	select MISDN_HDLC
 	help
 	  Enable support for Traverse Technologies NETJet PCI cards.
 
+config MISDN_HDLC
+	tristate
+	select CRC_CCITT
+	select BITREVERSE
 
 config MISDN_IPAC
 	tristate

drivers/isdn/hardware/mISDN/Makefile

@@ -15,3 +15,5 @@ obj-$(CONFIG_MISDN_NETJET) += netjet.o
 # chip modules
 obj-$(CONFIG_MISDN_IPAC) += mISDNipac.o
 obj-$(CONFIG_MISDN_ISAR) += mISDNisar.o
+
+obj-$(CONFIG_MISDN_HDLC) += isdnhdlc.o

drivers/isdn/i4l/isdnhdlc.c → drivers/isdn/hardware/mISDN/isdnhdlc.c

@@ -25,8 +25,8 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/crc-ccitt.h>
-#include <linux/isdn/hdlc.h>
 #include <linux/bitrev.h>
+#include "isdnhdlc.h"
 
 /*-------------------------------------------------------------------*/
 

drivers/isdn/hardware/mISDN/netjet.c

@@ -29,7 +29,7 @@
 #include "ipac.h"
 #include "iohelper.h"
 #include "netjet.h"
-#include <linux/isdn/hdlc.h>
+#include "isdnhdlc.h"
 
 #define NETJET_REV	"2.0"
 

drivers/isdn/i4l/Makefile

-# SPDX-License-Identifier: GPL-2.0
-# Makefile for the kernel ISDN subsystem and device drivers.
-
-# Each configuration option enables a list of files.
-
-obj-$(CONFIG_ISDN_HDLC)		+= isdnhdlc.o