Rename the low_power_ctrl field to low_power_ctrl_an to be properly
descriptive of it being an autoneg field.
Signed-off-by: NLev Faerman <lev.faerman@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>