`tools/boardgen.py` is used by the `make-pins.py` scripts in many ports to
generate the pin definitions for the machine module.
In #17391 it was found that this is currently generating the C structs for
board pin definitions with inconsistent ordering (across different build
runs), which makes it sometimes impossible to get a consistent binary file
even for no change in source files.
This commit fixes that by sorting the board pin names alphabetically.
Signed-off-by: Andrew Leech <andrew.leech@planetinnovation.com.au>
95203ab88b