staging: vt6656: iwctl/key/rf use new structures.

This patch cleans up function declarations, definitions and local variables
were appropriate replacing types defined in "ttype.h" with linux/types.h

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>