This commit adds the allow(unused) attribute to functions and constants
that are not currently used. There is one warning remaining but
https://github.com/embassy-rs/cyw43/pull/23 attempts to address that
one. The constants have been moved into a module to allow the attribute
to be applied to the module as a whole.
The motivation for this is that it will hopefully make it easier to
spot new warnings that might be introduced by new, or updated code.
This commit add comments about what CLM stands for.
The motivation of this is that I think it helps understanding the code
for users who are new to the codebase (like me).
For some reason I got strange events on channel 1 (ASYNCEVENT_HEADER):
0.647329 WARN unexpected ehternet type 0x0508, expected Qualcom ether type 0x886c
This patch improves the validation of BCD WHD events to minimize the
risk for panic.
