Bluetooth: Controller: Build vendor LLL as library

[cvinayak]

Build vendor LLL as separate library so that independent compiler flags can be supplied if required.

[cvinayak]

@dleach02 as a codeowner of openisa, could you review the changes I have done to CMakelists (the building is covered in CI though) and hope its fine on target.

[cvinayak]

@henrikbrixandersen @MaureenHelm This PR is only refactoring the CMakelists, the builds are covered in the CI, and only need a second approval from @dleach02 as a codeowner of openisa. Can this be included in Zephyr v3.6?

[cvinayak]

Added DNM, until an approval from @dleach02

[henrikbrixandersen]

@henrikbrixandersen @MaureenHelm This PR is only refactoring the CMakelists, the builds are covered in the CI, and only need a second approval from @dleach02 as a codeowner of openisa. Can this be included in Zephyr v3.6?

Unfortunately, this has not yet been approved. We are a bit too late in the release process (hard freeze is tomorrow) to bring in this kind of refactoring, sorry. I have removed this from the v3.6.0 milestone.

[aescolar]

@dleach02, please note your review is gating this PR

[aescolar]

@cvinayak do you still want to gate this PR merge until @dleach02 's review? or should it just be merged?

[dleach02]

apologies for not seeing this... HWMv2 distracted me

[fabiobaltieri]

hey @cvinayak, I just bisected an issue to this PR, since this my nrf52 devices are getting a random address every time and the log shows:

[00:00:00.477,447] <wrn> bt_id: No static addresses stored in controller                                                               

Is this something you could look into?

Found it: #69721