staging: vchiq_core: Drop non-functional struct members

There are some struct members, which don't have a real
function. So it's safe to drop them.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20240621131958.98208-4-wahrenst@gmx.net


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>