Now that we have a board file, add calibration variant for TP-Link Archer C6 v2 and add ipq-wifi package for it. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> (cherry picked from commit 427c4aa266169b67aa26c0817b807d2921b4bba5) Signed-off-by: Leopoldo Pla <leopoldoplasempere@gmail.com> Link: https://github.com/openwrt/openwrt/pull/19035 Signed-off-by: Nick Hainke <vincent@systemli.org>