generic: add EHCI|OHCI platform driver fix from the cns21xx target

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35159 3c298f89-4303-0410-b956-a3cf2f4a3e73
generic: remove EHCI platform driver fix from 3.8

It is not needed on 3.8.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35160 3c298f89-4303-0410-b956-a3cf2f4a3e73