This provides the API to manipulte the pin muxing, where
a single pin may provide different functions depending on
settings.
[DL: changed commit message.]
Change-Id: Ifd161137c062dff184024b5aa34737604911d09c
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Daniel Leung <daniel.leung@intel.com>