staging: vt6655: fix camelcase in bRadioOff

Replace camel case variable bRadioOff with snake case
variable radio_off.
Drop Hungarian notation prefix in `bRadioOff` variable.
Change it to use snake case.

Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com>
Link: https://lore.kernel.org/r/20211113102126.82904-1-tomm.merciai@gmail.com


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