Update submodule nuttx to latest Tue Apr  7 03:33:04 UTC 2020
Update submodule nuttx to latest Tue Apr  7 03:33:04 UTC 2020

    - nuttx in PX4/Firmware (3cee71918ad35d155fcdd5f32770dad98619eb84): https://github.com/PX4/NuttX/commit/09f0aee3520ae69eb57aa9e7f41e9d17dc3a9045
    - nuttx current upstream: https://github.com/PX4/NuttX/commit/ec417d7466666801e911e50d72766225ca7790a1
    - Changes: https://github.com/PX4/NuttX/compare/09f0aee3520ae69eb57aa9e7f41e9d17dc3a9045...ec417d7466666801e911e50d72766225ca7790a1

    ec417d7466 2020-04-06 Peter van der Perk - [Backport] FMUK66 SocketCAN driver & Configurable Bitrate support
a3132cf3b7 2020-03-30 Peter van der Perk - [Backport] SocketCAN support

acfloria/Firmware,PX4/Firmware,krbeverx/Firmware,krbeverx/Firmware,PX4/Firmware,PX4/Firmware,PX4/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,krbeverx/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,acfloria/Firmware