Add coverity to travis ci
Add coverity to travis ci

Signed-off-by: Ola Jeppsson <793f970c52ded1276b9264c742f19d1888cbaf73@adapteva.com>

eliteraspberries/pal,parallella/pal,debug-de-su-ka/pal,eliteraspberries/pal,eliteraspberries/pal,debug-de-su-ka/pal,mateunho/pal,debug-de-su-ka/pal,mateunho/pal,parallella/pal,aolofsson/pal,parallella/pal,mateunho/pal,parallella/pal,debug-de-su-ka/pal,aolofsson/pal,mateunho/pal,eliteraspberries/pal,aolofsson/pal,eliteraspberries/pal,mateunho/pal,aolofsson/pal,debug-de-su-ka/pal,parallella/pal