* Understands when pwm pin is already exported.
* Will not unexport if didnt export. Can be forced.
Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
* maa_pwm_context becomes an opaque pointer
* C++ wrapper class Pwm
* swig now uses C++ wrapper Pwm to generate API
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>