msm: camera: sync: Prevent spin lock recursion

This commit handle spin lock recursion when both the
parent sync object is same as one of its child object.

CRs-Fixed: 2629192
Change-Id: I524f8ff176250d6aa32b1a03797cfa7858147c51
Signed-off-by: Ayush Kumar <ayushkr@codeaurora.org>