arm64: allwinner: h6: orangepi-lite2: Support BT+WIFI combo module

OrangePi Lite2 has AP6255 BT+WIFI combo chip. Add support for it.

Signed-off-by: Sebastian Meyer <git-commit@mailhell.seb7.de>
[merged BT and WIFI patches and updated commit message]
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>