feat: telemetry buffer for all internal modules

[raphaelcoeffic]

Targets which did not have support for CRSF or MULTI internal module (ex: X9D+ 2019, X7 ACCESS, NV14) would use a single telemetry buffer for internal and external module, thus causing clashes when 2 modules are used in parallel. This would for instance prevent using an external MPM as trainer module.

Please note that this will slightly increases memory usage for the targets mentioned above (up to 128 bytes).

Summary of changes:

• enable telemetry buffer for targets without CRSF or MULTI internal module support compiled into the firmware.

[3djc]

128 bytes ! Hurts, but needed I guess

[raphaelcoeffic]

128 bytes ! Hurts, but needed I guess

You don't cook omelette without breaking eggs 😇

[pfeerick]

This would for instance prevent using an external MPM as trainer module.

Hm... well, unless we were deciding that this is no longer a feature, it's not really an option but to lose some bytes... been nice knowing you, 128 bytes of SRAM 😆 You will be sorely missed I'm sure, especially on low SRAM transmitters! 🙃

[3djc]

I think we are all violently agreeing here :)