add webusb memory region support in dfu mode

[daichengqian]

Related area

usbd.h

Hardware specification

stm32h5

Is your feature request related to a problem?

when we use webusb to flash our stm32h5 chip , we find not "Selected memory region" shows on the html. shows below

Describe the solution you'd like

replace

#define TUD_DFU_DESCRIPTOR(_itfnum, _alt_count, _stridx, _attr, _timeout, _xfer_size) \
  TU_XSTRCAT(_TUD_DFU_ALT_,_alt_count)(_itfnum, 0, _stridx), \
  /* Function */ \
  9, DFU_DESC_FUNCTIONAL, _attr, U16_TO_U8S_LE(_timeout), U16_TO_U8S_LE(_xfer_size), U16_TO_U8S_LE(0x0101)

to

#define TUD_DFU_DESCRIPTOR(_itfnum, _alt_count, _stridx, _attr, _timeout, _xfer_size) \
  TU_XSTRCAT(_TUD_DFU_ALT_,_alt_count)(_itfnum, 0, _stridx), \
  /* Function */ \
  9, DFU_DESC_FUNCTIONAL, _attr, U16_TO_U8S_LE(_timeout), U16_TO_U8S_LE(_xfer_size), U16_TO_U8S_LE(0x011A)

specificly，changing bcdDFUVersion form 1.1 to 1.1a can resolve this problem

maybe why
DfuSe (DFU with ST Microsystems extensions) is a protocol based on DFU 1.1. However, in expanding the functionality of the DFU protocol, ST Microsystems broke all compatibility with the DFU 1.1 standard. DfuSe devices report the DFU version as "1.1a".

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.