msm: camera: core: Avoid concurrency between stop and pfdump

Camera context layer checks the state of the driver context and
allow the events to proceed. Two events should not execute
concurrently on context. Currently Dumping platform data
executing concurrently with flush or stop.
This changes avoid the concurrent execute of dump pf data and other events.
Added validation check in cam_context_config_dev_to_hw.

CRs-Fixed: 2602229
Change-Id: Ib5aaff0edbd39dd63e7eb1c38207f765da294817
Signed-off-by: Sravan Muppidi <muppidi@codeaurora.org>