staging: vt6656: MACvSetKeyEntry remove camel case.

camel case changes
pDevice -> priv
wKeyCtl -> key_ctl
uEntryIdx -> entry_idx
uKeyIdx -> key_idx
pbyAddr -> addr
wOffset -> offset

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