AUX1 TRACE output broken for DEBUG build.

[philmoz]

Is there an existing issue for this problem?

• I have searched the existing issues

What part of EdgeTX is the focus of this bug?

Transmitter firmware

Current Behavior

No TRACE output is being sent to AUX1 on TX16S when built with DEBUG=YES
AUX1 serial port is no longer being initialised at startup.

Broken in PR #5232

Expected Behavior

TRACE output should be available at startup.

Steps To Reproduce

Build with DEBUG=YES on TX16S.

Version

Nightly (Please give date/commit below)

Transmitter

RadioMaster TX16S / TX16SMK2

Operating System (OS)

macOS

OS Version

No response

Anything else?

It seems that ENABLE_BOOTLOADER_DEBUG is now required to enable DEBUG code in the bootloader; but adding this prevents building due to missing functions.

Adding the missing files to the bootloader build still does not work as the DEBUG flag is not passed when compiling board.cpp.