mvebu soc changes for v3.15 (incremental pull #2)

 - mvebu
    - Add Armada 375, 380 and 385 SoCs

 - kirkwood
    - move kirkwood DT support to mach-mvebu
    - add mostly DT support for HP T5325 thin client
Merge branch 'mvebu/soc-kw' into mvebu/soc