staging: vt6656: BBvCalculateParameter remove camel case

Camel case changes
pDevice, cbFrameLength, wRate, byPacketType, cbBitCount, cbUsCount
cbTmp, bExtBit, byPreambleType

->

priv, frame_length, tx_rate, pkt_type, bit_count, count,
tmp,  ext_bit, preamble_type

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