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

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

- Misc turris_omnia/mox related Fixes and impovements (Pali)
- Turris Omnia: Add support for configuring mSATA and WWAN slots
  via env variables (Pali)
- net: mvgbe: Set PHY page 0 before phy_connect (Tony)
- kirkwood: nsa310s: Use Marvell uclass mvgbe and PHY driver (Tony)
- mvebu: turris_omnia: Fix SYS_RSTOUT_* macro names (Pali)
- mvebu: clearfog_defconfig: enable setexpr command (Josef)
- mvebu: x530: set MPP55 to gpio (Chris)