ar71xx: fix switch-config for dir-825-c1

Signed-off-by: Alexander Stadler <sa.maillists@univie.ac.at>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@35588 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: fix factory image creation for dir-825-c1

Signed-off-by: Alexander Stadler <sa.maillists@univie.ac.at>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@35589 3c298f89-4303-0410-b956-a3cf2f4a3e73