Staging: vt6656: int.c: Fixed Coding Style issues

Fixed almost all the issues given by checkpatch.pl except for one
warning about an 81 character line, which cannot really be decomposed
(the code is a bit too nested there).

Signed-off-by: Daniel Kenji Toyama <kenji.toyama@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>