[bsp] add sparkfun-redv bsp#4001

Merged

Guozhanxin merged 5 commits intoRT-Thread:masterfrom

luhuadong:riscv

Dec 28, 2021

Commits on Oct 31, 2020

[bsp] add spackfun-redv bsp
luhuadong
committed

Commits on Nov 2, 2020

[bsp][redv] delete specific path
luhuadong
committed

Commits on Dec 20, 2021

[bsp][redv] formatting
luhuadong
committed

Commits on Dec 23, 2021