When the EEPROM contains weird values for the power levels we have to
fix the interpolation process.
Signed-off-by: NFabio Rossi <rossi.f@inwind.it>
Acked-by: NNick Kossifidis <mickflemm@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>