USB: Add udev argument to interface suspend/resume functions

This patch (as1127) makes a minor change to the prototypes of the
usb_suspend_interface() and usb_resume_interface() routines.  Now the
usb_device structure is passed as an argument, instead of being
computed on-the-fly from the usb_interface argument.

It makes the code look simpler, even if it really isn't much different
from before.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>