msm: adsprpc: fix race condition in setting of static PD state

Fix race condition when the static PD state is being incorrectly
reset in the service locator callback if the locator state is
uninitialized, after the PD restart callback already finished
execution and set the static PD state, which is leading to false
audio daemon process init failures.

Change-Id: Ie605777db6f0abda7471f558d7b6515837c45a3e
Acked-by: Thyagarajan Venkatanarayanan <venkatan@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>