h-bridge stepper idle driver is missing Control pin assignments

Under Idle Hardware -> Stepper H-Bridge Configuration,, each bridge has "No1 Direction", twice, and Disable. but "control" is missing.


in the ini, the same h-bridges for ETB would have 3 parameters:
```

dialog = etbHbridgeHardwareNo1, "H-Bridge Hardware No1"
field = "No1 Direction #1", etbIo1_directionPin1
field = "No1 Direction #2", etbIo1_directionPin2
field = "No1 Control", etbIo1_controlPin
field = "No1 Disable", etbIo1_disablePin
```

but for idle h-bridge, only 2 are in the .ini

```
dialog = stepperHbridgeHardwareNo1, "H-Bridge Hardware No1"
field = "No1 Direction #1", stepperDcIo1_directionPin1
field = "No1 Direction #2", stepperDcIo1_directionPin2
field = "No1 Disable", stepperDcIo1_disablePin

```