USB: EHCI: create sysfs companion files directly in the controller device

The controller device is where we want this sysfs file, especially as
the dev pointer is about to go away...

Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 97a53a4..f46ad27 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -391,7 +391,7 @@
 
 	/* with integrated TT there is no companion! */
 	if (!ehci_is_TDI(ehci))
-		i = device_create_file(ehci_to_hcd(ehci)->self.dev,
+		i = device_create_file(ehci_to_hcd(ehci)->self.controller,
 				       &dev_attr_companion);
 }
 
@@ -399,7 +399,7 @@
 {
 	/* with integrated TT there is no companion! */
 	if (!ehci_is_TDI(ehci))
-		device_remove_file(ehci_to_hcd(ehci)->self.dev,
+		device_remove_file(ehci_to_hcd(ehci)->self.controller,
 				   &dev_attr_companion);
 }