Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-marvell

- net: mv88e6xxx: fix missing SMI address initialization (Marek)
- mvebu: turris_omnia: Enable networking via ethernet switch (Marek)
- mvebu: helios-4: add config fragment for spi booting et al (Josua)
- rng: Add Turris Mox rTWM RNG driver (Max)