Update submodule ecl to latest Sat Feb  9 00:38:44 UTC 2019
Update submodule ecl to latest Sat Feb  9 00:38:44 UTC 2019

    - ecl in PX4/Firmware (65377def832e82bd667ff6e0d00155c95b51b12e): https://github.com/PX4/ecl/commit/54ab8191e34b06dd2e6f96fe1b0adb971c5b77f0
    - ecl current upstream: https://github.com/PX4/ecl/commit/1378ec179717448404c74819871d149217350b19
    - Changes: https://github.com/PX4/ecl/compare/54ab8191e34b06dd2e6f96fe1b0adb971c5b77f0...1378ec179717448404c74819871d149217350b19

    1378ec1 2019-02-07 Daniel Agar - EKF mag_fusion avoid unnecessary double promotion

dagar/Firmware,dagar/Firmware,PX4/Firmware,dagar/Firmware,krbeverx/Firmware,acfloria/Firmware,acfloria/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,krbeverx/Firmware,krbeverx/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,PX4/Firmware,PX4/Firmware,acfloria/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,dagar/Firmware,mje-nz/PX4-Firmware,dagar/Firmware,acfloria/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,dagar/Firmware,PX4/Firmware,mje-nz/PX4-Firmware