staging: rtl8723au: Use rtl8723au_set_media_status() to replace _InitNetworkType()

Reduce yet another duplicate implementation of set_media_status()

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>