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/include/linux/usb.h b/include/linux/usb.h
index 583e048..7e31cac 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -387,6 +387,7 @@
 
 	unsigned can_submit:1;		/* URBs may be submitted */
 	unsigned discon_suspended:1;	/* Disconnected while suspended */
+	unsigned persist_enabled:1;	/* USB_PERSIST enabled for this dev */
 	unsigned have_langid:1;		/* whether string_langid is valid */
 	unsigned authorized:1;		/* Policy has said we can use it */
 	unsigned wusb:1;		/* Device is Wireless USB */
@@ -433,7 +434,6 @@
 	unsigned auto_pm:1;		/* autosuspend/resume in progress */
 	unsigned do_remote_wakeup:1;	/* remote wakeup should be enabled */
 	unsigned reset_resume:1;	/* needs reset instead of resume */
-	unsigned persist_enabled:1;	/* USB_PERSIST enabled for this dev */
 	unsigned autosuspend_disabled:1; /* autosuspend and autoresume */
 	unsigned autoresume_disabled:1;  /*  disabled by the user */
 	unsigned skip_sys_resume:1;	/* skip the next system resume */