Looks like this code was ever used. It was added by commit fe3702054f6412aea04373ceb9d27a4a417ff3f0 "OMAP: Fix USB on Nokia 770"
that can be found from linux-omap history if needed.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>