docs: Add labels for supported hardware

This gives us the ability to easily reference them in various other parts (eg. release notes).

Signed-off-by: Andrei Gherzan andrei.gherzan@huawei.com

requested review from @stefanschmidt and @mrybczyn

assigned to @agherzan

mentioned in merge request docs!47 (merged)

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started a merge train

removed this merge request from the merge train because pipeline did not succeed

enabled automatic add to merge train when the pipeline for 7d8c8be4 succeeds

started a merge train

merged

mentioned in commit 137609c8