Include the correct video4linux2 header

Originally committed as revision 5430 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1273,7 +1273,8 @@ if test "$v4l2" = "yes"; then
 # check for video4linux2 --- V4L2_PIX_FMT_YUV420
 cat > $TMPC << EOF
 #include <sys/time.h>
-#include <linux/videodev.h>
+#include <asm/types.h>
+#include <linux/videodev2.h>
 int dummy = V4L2_PIX_FMT_YUV420;
 struct v4l2_buffer dummy1;
 EOF

libavformat/v4l2.c

@@ -30,8 +30,8 @@
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/time.h>
-#define _LINUX_TIME_H 1
-#include <linux/videodev.h>
+#include <asm/types.h>
+#include <linux/videodev2.h>
 #include <time.h>
 
 static const int desired_video_buffers = 256;