Add IPQ Wifi entry for Ath79 TP-Link Archer C6 v2. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> (cherry picked from commit c88515dd8685e719f232b3797079aba7ae069f7e) Signed-off-by: Leopoldo Pla <leopoldoplasempere@gmail.com> Link: https://github.com/openwrt/openwrt/pull/19035 Signed-off-by: Nick Hainke <vincent@systemli.org>