msm: ADSPRPC: Re-use persistent map on static pd restart

Persistent map is not freed and if not reused properly,
CMA memory leak scenario is observed. This happens
because for dynamic loading mapping, re-usage of
persistent map is not considered.

Change-Id: Id285a12446894085a986c97e6c53b28c6b927a2e
Acked-by: Ekansh Gupta <ekangupt@qti.qualcomm.com>
Signed-off-by: Jeya R <jeyr@codeaurora.org>