Config: hardware/lctr-a6xx/hg1700: Added Private to IMU power channel.
Config: hardware/lctr-a6xx/psimar: Added Private to IMU power channel.
Config: lauv-seacon-1: Comply with IMU power channel label.
Config: lauv-noptilus-1: Comply with IMU power channel label.
Config: lauv-noptilus-3: Added IMU and PSIMAR devices.
config: lauv-noptilus-3: Updated fuel profile with IMU specifications.
Power/PSIMAR: Changed default value of power channel to 'Private (IMU)'.
Config: lauv-noptilus-3: PCTLv2 IMU power channel is not connected.
Config: lauv-noptilus-1: PCTLv2 IMU power channel is not connected.
Merge branch 'task/3185'

Task #3185: LAUV Noptilus 3 now has one Honeywell HG1700 IMU and the
configuration file was updated accordingly. Several other
configuration files were changed to reflect the fact that now the
default IMU power is called 'Private (IMU)'.

Authored by: José Braga
Authored by: Pedro Calado
Reviewed by: Ricardo Martins

This commit fixes #3185.