Update SConscript of connectivity-abstraction

Update SConscript of connectivity-abstraction

currently bt_edr_adapter is not supported on linux platform.
but if TARGET_TRANSPORT=ALL is used, all adapters are included.

Change-Id: I4439154a4f08c5e040b7a63f104052c6a5aa1097
Signed-off-by: hyuna0213.jo <hyuna0213.jo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/11111
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Phil Coval <philippe.coval@osg.samsung.com>
Reviewed-by: Jon A. Cruz <jon@joncruz.org>