[airframes] update imu/ahrs freq conf for aspirin in microjet lisa/m example
[electrical] fix missing defined
[tests] fix test_baro for lisa
[sw/ext] update libopencm3 to latest master
[sw/ext] only build stm32 targets of libopencm3
[stm32] update can for latest libopencm3
[conf] pass configured AHRS_x_FREQUENCY on for rotorcrafts as well
[sim] fix symbolic link
[log/replay] this should allow to replay logs including procedures

fix #227
adjusted scaling of ezcurrent sensor
[modules] minor cleanup of ezcurrent sensor