ARM: SoC non-critical fixes

Here's a small collection of fixes accrued during the last release that weren't
considered severe enough to merge during the -rc series.

A few of these are around resurrecting TI81xx support that's been broken for
quite a while, the rest are smaller fixes -- most for PXA but a few across
the board.

There are also some updates to MAINTAINERS here, in particular for Broadcom
platforms.
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