RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ v5.2.1

cermin dari https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

Chen Wang db5a503768 doxygen: move device_driver under to components for pages		9 bulan lalu
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hwtimer.md	db5a503768 doxygen: move device_driver under to components for pages	9 bulan lalu