extcon: arizona: Updates for v3.10

There's a bunch of different things in this series, I can split them out
if need be:

 - Support for configuring the button detection circuit to reflect the
   accessories supplied with the system.
 - Improvements in the HPDET based detection scheme.
 - Additional robustness against more pathological use cases.
 - A few small standalone fixes.
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extcon: arizona: Make mic detection timeout configurable

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2 files changed