[Feature] 统一软件i2c

[kaidegit]

Describe problem solved by the proposed feature

既然rtt中已经有软件i2c了，bsp中的软件i2c和为了软件i2c而暴露的中间层bit_ops是不是没什么必要了

Describe your preferred solution

No response

Describe possible alternatives

No response

[kaidegit]

#9932 已经在做了