BACKPORT: driver core: Look for waiting consumers only for a fwnode's primary device

Commit 4dbe191c046e ("driver core: Add device links from fwnode only for
the primary device") skipped linking a fwnode's secondary device to
the suppliers listed in its fwnode.

However, a fwnode's secondary device can't be found using
get_dev_from_fwnode(). So, there's no point in trying to see if devices
waiting for suppliers might want to link to a fwnode's secondary device.

This commit removes that unnecessary step for devices that aren't a
fwnode's primary device and also moves the code to a more appropriate
part of the file.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200515053500.215929-3-saravanak@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 5f5377eaddfc24e5d7562e588d0ff84f9264d7c1)
[conflict fixes due to of_devlink rename to fw_devlink]
Bug: 157691602
Signed-off-by: Saravana Kannan <saravanak@google.com>
Change-Id: Id0455f6bc05d89b0f81d1574a242be6b8ff67975