driver core: bus: constify some internal functions

The functions add_probe_files() and remove_probe_files() should be
taking a const * to bus_type, not just a *, so fix that up.  These
functions should really be removed entirely and an attribute group used
instead, but for now, make this change so that other const work can
continue.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230208111330.439504-21-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/bus.c

@@ -603,7 +603,7 @@ static void remove_bind_files(struct device_driver *drv)
 static BUS_ATTR_WO(drivers_probe);
 static BUS_ATTR_RW(drivers_autoprobe);
 
-static int add_probe_files(struct bus_type *bus)
+static int add_probe_files(const struct bus_type *bus)
 {
 	int retval;
 
@@ -618,7 +618,7 @@ out:
 	return retval;
 }
 
-static void remove_probe_files(struct bus_type *bus)
+static void remove_probe_files(const struct bus_type *bus)
 {
 	bus_remove_file(bus, &bus_attr_drivers_autoprobe);
 	bus_remove_file(bus, &bus_attr_drivers_probe);