Merge https://source.denx.de/u-boot/custodians/u-boot-marvell

CI: https://dev.azure.com/sr0718/u-boot/_build/results?buildId=389&view=results
- kirkwood: Enable bootstd and other modernization for OpenRD boards
  (Tony)
- board: solidrun: clearfog: enable ddr odt0 on write for both
  chip-select (Josua)
- configs: mvebu_espressobin_ultra-88f3720_defconfig: enable full
  bootflow functionality (Ben)
- Initial support for PXA1908 and samsung-coreprimevelte (Duje)