This commit updates the "*_struct.h" files for the USB OTG peripheral:
- Added/removed some missing/non-existing register fields
- Added "reserved" place holders for registers that are missing due to IP
configuration.
- Added "usb_dwc_cfg.h" listing the USB OTG IP configuration for each target.
- Updated LL/HAL according to register field updates. Also tidied up the include
directives in those headers.