staging: vt6656: camel case and clean up devie_set_multi

White space clean up

Camel case changes
pDevice -> priv
pMgmt -> mgmt
byTmpMode -> tmp

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