Fix for Stepper Motor Idle Control out of range issues

[ric355]

Summary here is that the stepper cranking table is not being read correctly, which causes huge stepper targets that the system can't meet due to int values being read from a byte based table.

See the post here for a full explanation:

https://speeduino.com/forum/viewtopic.php?p=28200#p28200

Here is the fix, which goes in idle.ino in the initialization code. Note that the same fault is repeated in the IAC_ALGORITHM_STEP_CL section as well, so it needs fixing in both places.

    case IAC_ALGORITHM_STEP_OL:
      //Case 2 is Stepper open loop
      iacStepTable.xSize = 10;
      iacStepTable.valueSize = SIZE_BYTE;
      iacStepTable.values = configPage6.iacOLStepVal;
      iacStepTable.axisX = configPage6.iacBins;

      iacCrankStepsTable.xSize = 4;

// THIS LINE IS MISSING FROM THE JUNE 2018 FIRMWARE (and probably from older versions).
      iacCrankStepsTable.valueSize = SIZE_BYTE;
// 

      iacCrankStepsTable.values = configPage6.iacCrankSteps;
      iacCrankStepsTable.axisX = configPage6.iacCrankBins;
      iacStepTime = configPage6.iacStepTime * 1000;

      completedHomeSteps = 0;
      idleStepper.curIdleStep = 0;
      idleStepper.stepperStatus = SOFF;
      break;

[noisymime]

Thanks for the report! Will apply the fix and commit shortly.