Enabled LSE clock for RTC, set clk drive strength to 3. Else the quarzt on the fmuv5x does not socillate reliabel.

 - vehicle_attitude_setpoint thrust_body is a vector, but mavlink ATTITUDE_TARGET thrust is only a magnitude
 - this allows the stream to be correct for both MC & FW use cases

This reverts commit 470f2403.

This reverts commit 9e112dd4.

This will ensure that the CRCs will match with deployed units to avoid unnecessary incompatibilities while we are figuring out how to best standardize these between stakeholders.

 - fixes https://github.com/PX4/PX4-Autopilot/issues/16715

Signed-off-by: Silvan Fuhrer <silvan@auterion.com>

Signed-off-by: Claudio Micheli <claudio@auterion.com>

 - currently the main change is that it reduces the max number of ORB multi instances to 4, but usage will be expanded as needed
 - limits number of EKF2 multi instances to 2.
 - enabled on all cortex m4 boards

The overhead of the MAVROS setup means that most developers are not using it, leading to tests that are not suitable for day-to-day workflows. We are replacing these with MAVSDK tests that can be run locally pre-commit.

This PR cleansup unused rover mixers from the ROMFS

This is suboptimal but survivable since MacOS is not a deployment target. We still need to identify the root cause.

    - sitl_gazebo in PX4/Firmware (bb7dd0cf): https://github.com/PX4/PX4-SITL_gazebo/commit/46aef29718495d2f668c1648f4c0b0f43b9d9671
    - sitl_gazebo current upstream: https://github.com/PX4/PX4-SITL_gazebo/commit/e580bbcd1eb6902c658ed3ece3b3b28dfd57eb17
    - Changes: https://github.com/PX4/PX4-SITL_gazebo/compare/46aef29718495d2f668c1648f4c0b0f43b9d9671...e580bbcd1eb6902c658ed3ece3b3b28dfd57eb17

    e580bbc 2021-01-30 JaeyoungLim - Use include model syntax for bluerov (#702)
663a553 2021-01-30 Tim - Added GPS and changed the Thruster config of the bluerov2 SDF file (#700)
4674826 2021-01-29 Thies Lennart Alff - increased ODE solver iterations to avoid deflection of the thrusters (#701)

Co-authored-by: Beat Küng <beat-kueng@gmx.net>

Apply suggestions from code review use stdout

Co-authored-by: Beat Küng <beat-kueng@gmx.net>

   This system command will display, set and save the network
   settings.

   netman show   - Displays the current settings.

   netman update - Will check for a net.cfg file on the SD card.
                   If present, it will update the paramaters,
                   delete the file, and reboot. Using the new settings.

   netman save - Saves the current settings to net.cfg on the SD card.
                 This file shoulf be renamed to preserver it across
                 reboots or editited to chech networkin paramates.

   File format is name<space>value:

   echo DEVICE=eth0           > /fs/microsd/net.cfg
   echo BOOTPROTO=fallback    >> /fs/microsd/net.cfg
   echo IPADDR=192.168.0.4    >> /fs/microsd/net.cfg
   echo NETMASK=255.255.255.0 >>/fs/microsd/net.cfg
   echo ROUTER=192.168.0.254  >>/fs/microsd/net.cfg
   echo DNS=192.168.0.254     >>/fs/microsd/net.cfg

   Valid values for `proto` are `dhcp`, `static`, `falback`
   Both will try dhcp for CONFIG_NETINIT_FALLBACK times
   and fall back to the static address.

   NETMASK - is the network mask.
   IPADDR  - this nodes ip address for static or fall back.
   ROUTER  - The default route.
   DNS     - The address of the dns server.

px4_fmu-v5x:Use Bin Net settigns

 - respect IMU_GYRO_RATEMAX for configured interval
 - optionally compile at higher optimization level per board (${MAX_CUSTOM_OPT_LEVEL})

* stm32_common: Add support for STM32F42x/STM32F43x rev. 5/B

According to ST, both 5 and B share the same REV_ID.

Signed-off-by: Alexey Rogachevskiy <sfalexrog@gmail.com>

* stm32_common: Change comment to match code, change enum names to match revisions