mvebu dt for 4.4 (part 2)

- Add support for severals Armada-370-based Seagate NAS
- Fix Ready NAS device tree
- Modify SDHCI binding for A388-GP allowing using it on old and new
  version of the board

* tag 'mvebu-dt-4.4-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: set SW polling as SDHCI card detection on A388-GP
  arm: mvebu: reorder nodes under internal-regs by address in RN2120 .dts file
  arm: mvebu: disable unused Armada RTC on ReadyNAS 102, 104 and 2120
  ARM: mvebu: add DT support for Seagate Personal Cloud
  ARM: mvebu: add DT support for Seagate NAS 2 and 4-Bay
Signed-off-by: Olof Johansson <olof@lixom.net>