* Move to a structure instead of pointers to registers
* Autobaud operates per-uart
* When explitily setting uart speed, it applies to all uarts
This allows both UARTs to be enabled and serviced simultaneously,
allowing either accessory port to be used. Note that the last
port to receive something is where subsequent transmits are directed,
and only one set of IAP state is maintained.
To change this, we will need to revamp IAP to support more than
one state machine, and then extend the serial API to allow for both
UARTs to be used independently. Probably not worth the effort.
Change-Id: I0142f0906706fc0c4ee6d6d7aa6b0515e1a749dd