rpmsg: qcom_smd: allow smd create device if remote state is closing

Some remote edge initial rx channel state is set to CLOSING, in this
scenario, allow creation of smd device for this edge.

Change-Id: I5937b8f2451630c9ecbe8627ab8817a4ce00e673
Signed-off-by: Suresh Kumar Allam <allamsuresh@codeaurora.org>