RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ de1df3e308f488cbf285905a4f92da9aaef68430

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greedyhao 67bf5cea1f [bluetrum] add sound and romfs support		5 lat temu
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startup.S	67bf5cea1f [bluetrum] add sound and romfs support	5 lat temu
system_ab32vgx.c	54c880e979 [bluetrum] edit .lds	5 lat temu