add support to MPX6115 Map ( Baro )

[Neo]

Hi

Could you add support to baro sensor mpx 6115

case MT_MPX4115:
return {0.5, 20, 4.89, 120};

if we use for example Mpx6400 for map we can use custom baro, for now I use mpx4100 in soft but i have 6115on pcb, I can't compil on windows to set voltage and kpa in place of 4100 to have good value

thanks

[AndreyB]

please https://github.com/rusefi/rusefi/issues/new adding reference to sensor documentation