Use _chisel3 analog for MIG inout

MockAON: Accept the non-debug interrupt as an input to overall reset.

Debug v013

Mux1H converts aggregates to UInt, muxes, then converts back which can
look like a cominational loop.

The format is taken from here:
http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/pci/xilinx-pcie.txt

DTS

Standardize how they are connected to the periphery bus

Use HeterogenousBag to handle lists of peripherals

Previously we had to do weird things to make non-homogenous
lists of items (e.g. PWM Peripherals where ncmp were different from one to
the other) into a vector. But now Chisel supports a Record type,
and we use the HomogenousBag utility to do this more naturally.
This also deletes all the cruft which was introduced to get
around the limitation which doesn't exist anymore.

I2c implementation