msm: ADSPRPC: Handle fastrpc glink channel open on timeout

Added channel state and checks to avoid glink channel opening twice
during timeout of previous call. Clean up and added more checks.

Change-Id: Ibf5343a86d3aeaf67acfbae381f103428c98ea73
Acked-by: Viswanatham Paduchuri <vpaduchu@qti.qualcomm.com>
Signed-off-by: Sathish Ambley <sathishambley@codeaurora.org>