[media] dvb_usb_v2: merge files dvb_usb_init.c and dvb_usb_dvb.c

Merge files dvb_usb_init.c and dvb_usb_dvb.c to dvb_usb_core.c.
It is still under 1000 lines of code after all the optimization
so put it one file.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/Makefile

 dvb-usb-objs = dvb-usb-firmware.o dvb-usb-init.o dvb-usb-urb.o dvb-usb-i2c.o dvb-usb-dvb.o dvb-usb-remote.o usb-urb.o
 obj-$(CONFIG_DVB_USB) += dvb-usb.o
 
-dvb_usbv2-objs = dvb_usb_init.o dvb_usb_urb.o dvb_usb_dvb.o usb_urb.o
+dvb_usbv2-objs = dvb_usb_core.o dvb_usb_urb.o usb_urb.o
 obj-$(CONFIG_DVB_USB_V2) += dvb_usbv2.o
 
 obj-$(CONFIG_DVB_USB_FIRMWARE) += dvb_usb_firmware.o

drivers/media/dvb/dvb-usb/dvb_usb_common.h

@@ -11,11 +11,7 @@
 
 #include "dvb_usb.h"
 
-extern int dvb_usbv2_disable_rc_polling;
-
 /* commonly used  methods */
-extern int dvb_usbv2_device_power_ctrl(struct dvb_usb_device *d, int onoff);
-
 extern int usb_urb_initv2(struct usb_data_stream *stream,
 		const struct usb_data_stream_properties *props);
 extern int usb_urb_exitv2(struct usb_data_stream *stream);
@@ -23,12 +19,4 @@ extern int usb_urb_submitv2(struct usb_data_stream *stream,
 		struct usb_data_stream_properties *props);
 extern int usb_urb_killv2(struct usb_data_stream *stream);
 
-extern int dvb_usbv2_adapter_stream_init(struct dvb_usb_adapter *adap);
-extern int dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter *adap);
-
-extern int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap);
-extern int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap);
-extern int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap);
-extern int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap);
-
 #endif