staging: vchiq_core: Make vchiq_dump_service_state static

staging: vchiq_core: Make vchiq_dump_service_state static

The function vchiq_dump_service_state() is only used by vchiq_dump_state()
within vchiq_core.c. So move the definition of vchiq_dump_state() below
vchiq_dump_service_state() in order to make it static.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20231029124837.119832-2-wahrenst@gmx.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>