Support for Calxeda ECX-2000 SOC from Rob Herring

* tag 'calxeda-ecx-2000' of git://sources.calxeda.com/kernel/linux:
  ARM: highbank: Add initial ECX-2000 support
  ARM: highbank: abstract out SCU usage
  ARM: smp_twd: don't warn on no DT node
  ARM: dts: Add Calxeda ECX-2000 support
  ARM: highbank: enable coherent DMA for xgmac in dts
  ARM: highbank: disable unused sdhci and gpio in dts
  + sync to Linux 3.7-rc3