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

- Enable CONFIG_TIMER for all Kirkwood / MVEBU boards (Stefan)
- u-boot-spl.kwb/SPL: Add / improve size limit setup / detection (Pali)
- mvebu: theadorable: Misc updates in defconfig und dts (Stefan)