driver core: module: make module_[add|remove]_driver take a const *

The functions module_add_driver() and module_remove_driver() do not
modify the struct device_driver structure directly, so they are safe to
be marked as a constant pointer type.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/2024070850-entering-grandson-205e@gregkh


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