msm: ipa3: add a lock for active client logging

Add a spinlock to protect active client logging data structures.

Change-Id: I7e7e7865bced1917e900994aafc3205a00267d68
CRs-Fixed: 2084689
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>