요렇게 해보시죠.
LatLngBounds.Builder zoomToFitBuilder = new LatLngBounds.Builder();
zoomToFitBuilder.include(첫 번째 좌표 LatLng);
zoomToFitBuilder.include(두 번째 좌표 LatLng);
LatLngBounds zoomToFitBound = zoomToFitBuilder.build();
int padding = 50;
CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(zoomToFitBound, padding);
map.animateCamera(cu);