media: cx231xx: get rid of videobuf-dvb dependency

This driver doesn't use videobuf-dvb. So, stop adding an
unused struct and unused header on it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/usb/cx231xx/Kconfig

@@ -42,7 +42,6 @@ config VIDEO_CX231XX_ALSA
 config VIDEO_CX231XX_DVB
 	tristate "DVB/ATSC Support for Cx231xx based TV cards"
 	depends on VIDEO_CX231XX && DVB_CORE
-	select VIDEOBUF_DVB
 	select MEDIA_TUNER_XC5000 if MEDIA_SUBDRV_AUTOSELECT
 	select MEDIA_TUNER_TDA18271 if MEDIA_SUBDRV_AUTOSELECT
 	select DVB_MB86A20S if MEDIA_SUBDRV_AUTOSELECT

drivers/media/usb/cx231xx/cx231xx-dvb.c

@@ -23,8 +23,12 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 
+#include <media/dvbdev.h>
+#include <media/dmxdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_net.h>
+#include <media/dvb_frontend.h>
 #include <media/v4l2-common.h>
-#include <media/videobuf-vmalloc.h>
 #include <media/tuner.h>
 
 #include "xc5000.h"

drivers/media/usb/cx231xx/cx231xx.h

@@ -38,7 +38,6 @@
 #include <media/v4l2-fh.h>
 #include <media/rc-core.h>
 #include <media/i2c/ir-kbd-i2c.h>
-#include <media/videobuf-dvb.h>
 
 #include "cx231xx-reg.h"
 #include "cx231xx-pcb-cfg.h"
@@ -546,8 +545,6 @@ struct cx231xx_tsport {
 	int                        nr;
 	int                        sram_chno;
 
-	struct videobuf_dvb_frontends frontends;
-
 	/* dma queues */
 
 	u32                        ts_packet_size;