connman: don't depend on ofono/bluez but let packagegroup do that

We don't need a direct dependency from connman on ofono or bluez as that is something we
have to decide per machine and the best place for this is a packagegroup. ofono gets now
included by the already existing packagegroup-webos-telephony and bluez is already through
package-webos-ports-extended.

Signed-off-by: Simon Busch <morphis@gravedo.de>
distro: select correct version of ofono

Signed-off-by: Simon Busch <morphis@gravedo.de>
ofono: set correct path for ${S}

Signed-off-by: Simon Busch <morphis@gravedo.de>