AxionAOSP v2.2.1 Hotfix

AxionOS v2.2.1 Exynos1330
Build Date: 07.12.2025

Changelog:

Display: Fixed minimum brightness issue to prevent black screen at level 0.
Headers: Cleaned up epoll_event struct definition to resolve build conflicts.
Performance: Updated CPU variant to cortex-a76 for better optimization.
Power: Allowed deeper CPU idle states to improve power efficiency.
Connectivity: Fixed unstable USB tethering connections.
System: Added libepicoperator shim to resolve missing symbol errors.