musb 0.0.1

Mentor usb Support
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Now in:

https://github.com/py32-rs/py32-hal/pull/19


musb:
- Ti
- Sifli 思澈科技
- beken 北科微
- allwinnertech 全志
- 东软载波微?

- mini musb:
- STC - stc8, stc32, ai8051u
- Puya 普冉 - py32