Group BR-EDR related SDP variables under transport

Use Case: Random RNR initiated after HOGP Keyboard disconnection

steps:
1. keep madcatz in advertisement mode and scan, pair from DUT.
2. keep dailog Keyboard in advertisement mode and scan, pair from DUT.
3. Take Keyboard out of range to initiate disconnection from remote
or initiate disconnection from remote.

Failure: DUT trying to do RNR to random device.

Root Cause: when the disconnection happened for LE device, it sets
the wait_disc to true, that is causing random RNR to go for BR-EDR
device.

Fix: Group all BR-EDR related SDP variables under transport check
so that if some other operation on LE will not corrupt these BR-EDR
variables to mislead.

Test: code compilation.
Bug: 69031582
Change-Id: Ic9003f2b85bbaaa30b201b8a639a9d9b52055ac5