ralink: add dwc2 device_reset() call

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42445 3c298f89-4303-0410-b956-a3cf2f4a3e73
ralink: dwc_otg->dwc2

the old dwc_otg driver is starting to fall apart and fails on newer 3g
modems and some storage devices. switch to the upstream dwc2 driver which
is no longer in staging/.

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42446 3c298f89-4303-0410-b956-a3cf2f4a3e73