msm: mhi_dev: Error notifications for Invalid Channels

Channel state notification broadcast to software channels
only as there are no clients listening to the broadcast
for the HW channel state updates. Update error logging
in case of invalid channels.

Change-Id: Id5a9f597fd76a53050f9f7d35173a2a78fcf2ef5
Signed-off-by: Nitesh Gupta <nitegupt@codeaurora.org>