ARM: arm-soc board updates, take 2

This branch contains board updates, mostly for shmobile, but also a
couple for PXA.

The shmobile platforms are still in the early stages of DT enablement,
so there's a bit more updates here than we'd ideally want to see:
 - regulator updates to provide some fixed regulators on several boards
 - gpio support updates for multiple boards
 - misc updates for recently-introduced boards armadillo800eva and kzm9g
 - defconfig updates
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