staging: vt6656: rf.c: RFbSetPower Remove camel case and clean up.

White space clean up.

Camel case changes;
pDevice -> priv
uRATE -> rate
uCH -> channel
bResult -> ret
byPwr -> power

No functional changes.

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