doxygen: Added documentation to Buzzer sensor

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>
doxygen: Added documentation to ultrasonic sensor

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>
doxygen: fix to documentaion of buzzer sensor

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>
doxygen: Added documentation to led bar (my9221)

Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>
upm: rename generated ipk package

* Version bump to 0.1.2

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>