net/libwebsockets: Update to 4.2.0

[otis]

Summary

• Update libwebsockets to 4.2.0
• Enable mqtt support by default
• "Hack" around hard git requirement

PR: 256019

[otis]

Remove now-unneeded post-patch

[otis]

Set cmake arg as string

[diizzy]

LGTM

[diizzy]

It's fine except for the rearrgement of which is bad, it's not presented like that, makes it harder to read and understand what's going on.

If anything, HTTP2 and HTTP_PROXY should trade places and "WolfSSL need" should be "WolfSSL needs".

[otis]

Only set LWS_BUILD_HASH

[otis]

Use proper variable name

[diizzy]

@otis
You can close this now

[diizzy]

...and this too :-)

[otis]

Committed, thanks.