Unusable Red Left Button for calibration

[broxinagil]

As I was going to calibrate my Shifter, left red button has no effect and there were a lot of 1's in the Button-Bitmap visible (1111111111111111100000000).

I had to change Line 414 :

old:
debug.out_buttons |= 1 << (gear - 1);

new:
debug.out_buttons |= 1UL << (uint32_t)buttonTable[i];