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

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

- a37xx: pci: Cleanup and minor fix for root port check (Pali)
- pci: mvebu: Ensure that root port is always on root zero bus (Pali)
- kwbimage: Fix dumping DATA registers for v0 images (Pali)
- kwbimage: Support for parsing extended v0 format (Pali)
- a37xx: Fix code and update DTS files to upstream version (Pali)
- a37xx: Fix and extend building memory map (Pali)
- ddr: marvell: a38x: fix BYTE_HOMOGENEOUS_SPLIT_OUT decision (Marek)
- mvebu: Optionally reset board on DDR training failure (Marek)