Merge tag 'u-boot-stm32-20211213' of https://source.denx.de/u-boot/custodians/u-boot-stm
- enable KSZ90x1 PHY driver on DHCOR - DHSOM boards: - increase USB power-good delay - add update_sf script to install U-Boot into SF - increase PHY auto-negotiation timeout to 20 seconds - fix SoM and board coding strap GPIO handling # gpg verification failed.