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

- MVEBU Espressobin fixes and enhancements (fix switch security
  issue, enable MVNETA, enable SD-card, fix COMPHY nodes, default
  env variables, etc)
- MMC Xenon: Set signal voltage and max base clock
- a37xx PCI driver: Depend on DM_GPIO and remove #ifdef's