USB: remove CONFIG_USB_PERSIST setting

This patch (as1047) removes the USB_PERSIST Kconfig option, enabling
it permanently.  It also prevents the power/persist attribute from
being created for hub devices; there's no point in having it since
USB-PERSIST is always turned on for hubs.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
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 8d513a1..fea9e47 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -28,7 +28,7 @@
 
 /*-------------------------------------------------------------------------*/
 
-#ifdef	CONFIG_USB_PERSIST
+#ifdef	CONFIG_PM
 
 static int ehci_hub_control(
 	struct usb_hcd	*hcd,
@@ -104,15 +104,6 @@
 	ehci->owned_ports = 0;
 }
 
-#else	/* CONFIG_USB_PERSIST */
-
-static inline void ehci_handover_companion_ports(struct ehci_hcd *ehci)
-{ }
-
-#endif
-
-#ifdef	CONFIG_PM
-
 static int ehci_bus_suspend (struct usb_hcd *hcd)
 {
 	struct ehci_hcd		*ehci = hcd_to_ehci (hcd);