usb: ohci: Allow ohci on omap5 also

With LPAE config we don't have omap3 or omap4 selected for
omap5 variants.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>