This directory contains new ADC12 functionality for the MSP430.  Spefically,
it provides the facilities to perform sequence-of-channels and
repeat-sequence-of-channels as outlined in section 17.2.7 or the MSP430 User's
Guide.

Because the current msp430adc12_channel_config_t structure does not provide
the necessary configuration support for sequences of channels, we either need
to have a parallel HAL1/HAL2 component set, or modify the existing component
set to provide the support.

There are a few issues at play.  Modifying the existing component set might
break existing applications or cause them to use more memory.  Also, it will
probably be harder to get the TWG to accept such changes unless they have very
little impact on existing applications.

Creating a parallel HAL for sequence-of-channel functionality means duplicating
more code.

Need to decide the right course of action

