fmu-v5 config split

[simonegu]

Describe problem solved by the proposed pull request
It is not simple to read through the board_config file. This will separate the gpio configuration according to the fmu-v5 spec https://docs.google.com/spreadsheets/d/1-n0__BYDedQrc_2NHqBenG1DNepAgnHpSGglke-QQwY/edit?usp=sharing

Describe your preferred solution
Ported the gpio and bus specific configuration in a separate common file gpio_config.h between different revision. RC00 / RC01

Possible additional improvements
It would even better if we would get rid of the RC00 version specific config and the BOARD_HAS_LTC4417, thoughts?

Test
Bench tested on a fmu-v5

[dagar]

Did PX4_FMUV5_RC00 ever ship in a product? If not I think we should drop it.

[dagar]

Can we review and merge this one first? #11370

[dagar]

If there's interest in breaking up this file why not do it by function?

adc/power
spi
can
timers

[simonegu]

Can we review and merge this one first? #11370

👍

If there's interest in breaking up this file why not do it by function?

@dagar I thought about that but since it is really specific to each board I thought that it could become a little cumbersome in the future maintenance if we split in 4 or more files for each board.

[davids5]

@simonegu, @dagar here we we should only remove the dead code for PX4_FMUV5_RC00

But leave I would the BOARD_HAS_LTC4417 - or you will have to document how to build a non LTC4417 design.

//#define PX4_FMUV5_RC00

#define PX4_FMUV5_RC01
#define BOARD_HAS_LTC4417