Merge branch 'marvell-doc' of git://github.com/MISL-EBU-System-SW/mainline-public into next/docs

* 'marvell-doc' of git://github.com/MISL-EBU-System-SW/mainline-public:
  arm: add documentation describing Marvell families of SoC
Signed-off-by: Arnd Bergmann <arnd@arndb.de>