[2.6 patch] VIDEO_VIVI must depend on VIDEO_DEV

[Adrian Bunk <bunk@kernel.org>]

This patch fixes the following compile error with
VIDEO_VIVI=y, VIDEO_DEV=m reported by Toralf Förster:

<--  snip  -->

...
  LD      .tmp_vmlinux1
drivers/built-in.o: In function `vivi_release':
vivi.c:(.text+0x322f5): undefined reference to `video_unregister_device'
vivi.c:(.text+0x32337): undefined reference to `video_device_release'
drivers/built-in.o: In function `vivi_open':
vivi.c:(.text+0x32845): undefined reference to `v4l2_type_names'
drivers/built-in.o: In function `vivi_init':
vivi.c:(.init.text+0x1d20): undefined reference to `video_device_alloc'
vivi.c:(.init.text+0x1d48): undefined reference to `video_register_device'
drivers/built-in.o:(.rodata+0x1b40): undefined reference to 
`video_ioctl2'drivers/built-in.o:(.data+0x140c): undefined reference to 
`video_device_release'
make: *** [.tmp_vmlinux1] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>

---
0985a480a30ce903211cf285f543e4929007ef95 diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 37072a2..2c292ee 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -382,7 +382,7 @@ endmenu # encoder / decoder chips
 
 config VIDEO_VIVI
 	tristate "Virtual Video Driver"
-	depends on VIDEO_V4L2 && !SPARC32 && !SPARC64
+	depends on VIDEO_DEV && VIDEO_V4L2 && !SPARC32 && !SPARC64
 	select VIDEOBUF_VMALLOC
 	default n
 	---help---