wembley: more correct sysfs_net labelling am: 09e9b1906d

Original change: https://android-review.googlesource.com/c/device/mediatek/wembley-sepolicy/+/2317079

Change-Id: Ia44d3ba80fbc29b319b9341eabb5ea1ee4879241
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>