[PATCH] USB: Use list_for_each_entry etc. in UHCI driver

This patch was developed largely by Domen Puncer.  It makes the code in
the UHCI driver more readable by utilizing list_for_each_entry and related
macros.  I merely made a couple of very small stylistic changes and
converted one additional hunk of code.
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>