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

- mvebu: dts: Armada8k enable mdio (Sven)
- a37xx: pci: Fix / enhance error handling (Pali)
- mvebu: espressobin/turris_: Enable GPT partition support (Pali)
- mvebu: sata_mv: Probe all ports (Tony)
- a37xx: pci: Don't spam about PIO Response Status (Marek)