staging: vt6656: camel case cleanup MACvRegBitsOff

camel case changes
pDevice -> priv
byRegOfs -> reg_ofs
byBits -> bits
pbyData -> data

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