修复gd32硬件iic时序问题，并添加gd32405rg BSP#11201

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ShiHongChao wants to merge 9 commits intoRT-Thread:masterfrom

ShiHongChao:master

Commits on Oct 31, 2025

[log]Update V5.2.2 Released Changelog.

CYFS3
authored and
Rbb666
committed

Commits on Dec 10, 2025

feat(bsp/gd32): 增加GDF0RG芯片BSP
ShiHongChao
committed

Commits on Jan 6, 2026

feat(bsp/gd32): 添加PWM和更多硬件定时器支持
 ShiHongChao
committed

Commits on Jan 11, 2026

fix(bsp/gd32/arm): 修复gd32硬件i2c驱动
 ShiHongChao
committed

Commits on Feb 10, 2026

Commits on Feb 17, 2026