cns3xxx: fix dwc_otg driver compat with udc-core

function.  This removes those from the dwc_otg driver and removes the patch
that comments out the linkage of udc-core so that the dwc_otg driver can
co-exist happily with other USB Device Controllers.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34475 3c298f89-4303-0410-b956-a3cf2f4a3e73