Add RC filter on INA inputs
Based on AFCZ review by P. Kulik
INA documentation states that "In general, filtering the INA3221 input is only necessary if there are transients at exact harmonics of the 500-kHz (±30%) sampling rate that are greater than 1 MHz."
Switching frequency of Exar bucks can be adjusted, so filtering these inputs would give us greater flexibility without possible issues with current sensing. We also don't have control over switching frequencies on FMCs and RTM.
We're not using Exar here, however argument of not having control over FMCs and RTM switching frequencies seems convincing to me.