musb 0.2.2

musb(Mentor USB) regs and `embassy-usb-driver`, `usb-device` impl
Documentation
fieldset/MISC:
  bit_size: 8
  description: Miscellaneous USB Configuration Register
  fields:
  - name: tx_edma
    description: DMA request timing for IN Endpoints
    bit_offset: 1
    bit_size: 1
    enum: EDMA_Mode

  - name: rx_edma
    description: DMA request timing for OUT Endpoints
    bit_offset: 0
    bit_size: 1
    enum: EDMA_Mode

enum/EDMA_Mode:
  bit_size: 1
  variants:
  - name: LATE_MODE
    value: 0
  - name: EARLY_MODE
    value: 1