Merge changes Ic79429c3,Ie2d5272e,Iec73f9c5,Ie63f48dc,I951da75a, ... into integration

* changes:
  feat(stm32mp2): load FW binaries to DDR
  feat(stm32mp2-fdts): update STM32MP257F-EV1 DT
  feat(fdts): add DDR4 files for STM32MP2
  feat(stm32mp25-fdts): add DDRCTRL and DDRPHY settings in DDR node
  feat(stm32mp25-fdts): add DDR power supplies
  feat(stm32mp2-fdts): add memory node
  feat(stm32mp2): enable DDR driver