Matek F405 TE, multirotor, use PVM outputs 5-8 not only for motors but for servos too.

[MikeZakhar]

Current Behavior

When user setup controller and select multirotor craft type then 1-8 pvm outputs reserved to motors but only 2 (9 and 10) for servos.

Desired Behavior

When user setup for example a quadrocopter PVM outputs 5-8 should be available for servos too.

Suggested Solution

Option 1: use different PVM output map for quadrocopter, hexacopter and octocopter.
Option 2: give to user ability to select which outputs will be used for motors which for servos.

Who does this impact? Who is this for?

Quadracopter users which need more than 3 servo outputs.

Additional Context

2 servos output it's not enough even for such simple case like camera with 2 axis gimbal and zoom.

[b14ckyy]

Implemented in 7.0 with #9268