UPSTREAM: driver core: Clarify documentation for fwnode_operations.add_links()

The wording was a bit ambiguous. So update it to make it clear.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20191113023559.62295-2-saravanak@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry-picked from bee3bbe616a2c8de641a64d874f9206835bd4401)
Change-Id: I55b9fe1e97324a453bda33206fe57cfaf711aba8