V4L/DVB (6586): Remove some dead code and make drive fully V4L2 compatible

There were some vestiges of an old V4L1 I2C driver that were called by em28xx.
This patch removes this dead code, and replaces videodev.h to videodev2.h

Now, this driver doesn't require V4L1 anymore.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/em28xx/Kconfig

 config VIDEO_EM28XX
 	tristate "Empia EM2800/2820/2840 USB video capture support"
-	depends on VIDEO_V4L1 && I2C && INPUT
+	depends on VIDEO_DEV && I2C && INPUT
 	select VIDEO_TUNER
 	select VIDEO_TVEEPROM
 	select VIDEO_IR

drivers/media/video/em28xx/em28xx-video.c

@@ -1675,16 +1675,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
 	dev->em28xx_read_reg_req = em28xx_read_reg_req;
 	dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
 
-	/* setup video picture settings for saa7113h */
-	memset(&dev->vpic, 0, sizeof(dev->vpic));
-	dev->vpic.colour = 128 << 8;
-	dev->vpic.hue = 128 << 8;
-	dev->vpic.brightness = 128 << 8;
-	dev->vpic.contrast = 192 << 8;
-	dev->vpic.whiteness = 128 << 8;	/* This one isn't used */
-	dev->vpic.depth = 16;
-	dev->vpic.palette = VIDEO_PALETTE_YUV422;
-
 	em28xx_pre_card_setup(dev);
 
 	errCode = em28xx_config(dev);

drivers/media/video/em28xx/em28xx.h

@@ -25,7 +25,7 @@
 #ifndef _EM28XX_H
 #define _EM28XX_H
 
-#include <linux/videodev.h>
+#include <linux/videodev2.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 #include <media/ir-kbd-i2c.h>
@@ -239,7 +239,6 @@ struct em28xx {
 	/* video for linux */
 	int users;		/* user count for exclusive use */
 	struct video_device *vdev;	/* video for linux device struct */
-	struct video_picture vpic;	/* picture settings only used to init saa7113h */
 	struct em28xx_tvnorm *tvnorm;	/* selected tv norm */
 	int ctl_freq;		/* selected frequency */
 	unsigned int ctl_input;	/* selected input */