addinc v4l2 support

v4l2/t.c

@@ -16,7 +16,7 @@ int		verbosity;
 void help(int k)
 {
 puts("Options :");
-puts("\t-d WxH\timage size");
+puts("\t-K\tset the K parameter");
 puts("\t-v\tincrease verbosity");
 exit(0);
 }