[ARM] 4641/2: netX: fix kobject_name type

With commit 5984a2fc kobject_name() is
correctly being used to access the name field of kobj, but that function
needs a pointer to a kobject, not the kobject itself.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>