Пакет linux-tools: Информация

- Sync with v5.13 from sisyphus:
  - spec: build kselftests

- Port to E2K 5.4 kernel.
- Sync with v5.8 update from sisyphus:
  - spec: Switch to python3.
  - spec: Move perf into separate package.
  - spec: Build more tools (into linux-tools).
  - spec: Remove kernel version suffix from perf name.
  - spec: Pack /usr/libexec/perf-core.
  - spec: Enable libzstd.
  - spec: Add simple %check section.

- fixed typo alternatives for perf