Mikrotik cAP ac installations OpenWrt

Dear All
I have MikroTik RBcAPGi-5acD2nD (cAP ac) and i would love to install openwrt on it but i didn't find any tutorial and as you know MikroTik RBcAPGi-5acD2nD (cAP ac) it has only 2 ethr port POE
and advice from your experience please?
with regards

https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=70eedac9b30a06d0d1445bfa31743440ba535e51