oc: sync with Nitrogen6x changes (systemd, mass storage)

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
bcmdhd: fix compiler warning (no functional change)

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
bcmdhd: always use Mac address from CIS

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>