[sys_time] if PERIODIC_FREQUENCY is defined, set default SYS_TIME_RESOLUTION to twice that
[imu_aspirin2] read mag again.. got disabled with Michal's baro_board stuff
explicitly enable reading of baro ms5611 through mpu with USE_IMU_ASPIRIN2_BARO_SLAVE:
seems to be configured but not functional since the baro value is never read anywhere..