remove unused test code generation, use sdp_create_spp_service instead of local copy

git-svn-id: http://btstack.googlecode.com/svn/trunk@2811 1a0a8af8-31b5-11de-8e0c-53a27eea117e
added gap_update_connection_parameters

git-svn-id: http://btstack.googlecode.com/svn/trunk@2812 1a0a8af8-31b5-11de-8e0c-53a27eea117e