Exclude libusbdroid from doxygen
Exclude libusbdroid from doxygen

Signed-off-by: Nick Dyer <c8f0c1d5fcda9220e27043f45924e42042c4e015@itdev.co.uk>

kdunning/mxt-app,barak/obp-utils,kdunning/mxt-app,vincentbernat/mxt-app,vincentbernat/mxt-app,boundarydevices/mxt-app,barak/obp-utils,boundarydevices/mxt-app