platform: msm_shared: G-Link core fix for pending close/reopen

Fixes in various files for pending close/reopen case. When a channel is
closed, invalidate the channel ID. Add a new initial channel state.

P4 Changelist: 8669612

Change-Id: I18c61d8d7c0c11e59db66801546e0fe11f878d2d
4 files changed