cherry-embedded/CherryUSB @ v1.5.2

tükrözi: https://github-proxy.rt-thread.io/cherry-embedded/CherryUSB.git

sakumisu 6a226e3e3c refactor(port/ch32): classify ch32 port		7 hónapja
..
usb_ch32_usbfs_reg.h	6a226e3e3c refactor(port/ch32): classify ch32 port	7 hónapja
usb_dc_usbfs.c	6a226e3e3c refactor(port/ch32): classify ch32 port	7 hónapja