RT-Thread/rt-thread: KM https://github.com/RT-Thread/rt-thread.git @ v5.2.0

réplica de https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

kurisaw c5f279c82c log: automatic update and deployment before version release		hai 1 ano
..
at91sam9260	b3d59050b0 [kernel] Specification interrupt nested level variable declaration type (#9568)	hai 1 ano
at91sam9g45	c5f279c82c log: automatic update and deployment before version release	hai 1 ano