[feature] Support for STM32U5-series

[Nightwalker-87]

Currently the U5 family is not supported.

• Programmer/board type: STlink/v2, STlink/v2-onboard, STlink/v3
• Operating system: Linux, Mac OS X, Windows (with specific version)
• Stlink tools version and/or git commit hash: v1.6.1
• Stlink commandline tool name: st-info, st-flash, st-util
• Target chip (and optional board): STM32U5-series

[tarek-bochkati]

what does this mean ? I'm not aware of such thing !

The only real issue is that the WL55 and H7 have the same core_id

[Nightwalker-87]

There were unintended leftovers from another ticket which served as a template by mistake. I've removed it. Thanks for the note.
The U5 series has been announced by ST recently: https://www.st.com/en/microcontrollers-microprocessors/stm32u5-series.html

[tarek-bochkati]

indeed, I already added support of this device in OpenOCD
http://openocd.zylin.com/#/c/6108/
the flash delta's are in the commit msg ...

[Nightwalker-87]

Just copied the content to have it here directly:

Author: Tarek BOCHKATI
AuthorDate: 2021-03-16 16:10:59 +0100

flash/stm32l4x: add support of STM32U57x/U58x

this device flash registers are quite similar to STM32L5 with this changes :

• flash size is up to 2MB
• 2MB variants are always dual bank
• 1MB and 512KB variants could be dual bank (contiguous addressing) depending on DUALBANK bit(21)
• flash data width is 16 bytes (quad-word)

[Nightwalker-87]

Related to #1005.