staging: vt6655: change 2 variable names wFB_Opt0 and wFB_Opt1

These variables are named using Hungarian notation, which is not used
in the Linux kernel.

Signed-off-by: Tanjuate Brunostar <tanjubrunostar0@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/Y2Nu/i957Ill7r+d@elroy-temp-vm.gaiao0uenmiufjlowqgp5yxwdh.gvxx.internal.cloudapp.net


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>