soc: qcom: glink: Fix channel migration logic

Channel migration logic assumes that the remote & local channel contexts
are always different and exist in different transports. If the remote
& local channel contexts exist in the same transport, then it leads to
a use-after-free scenario.

Fix the channel migration logic by not freeing the channel context if
the local & remote side opens in the same initial transport.

CRs-Fixed: 1002362
Change-Id: I319a93c49022b08e5c33b561d982a751d5223a58
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>