Adding OpenWrt support for MikroTik cAP ac

Thanks for the information @532910.

I was following the similar information available on enabling serial on the Hap AC2:

modifying the hard config partition, available on the same address.

I was able to read the flash using the CH341a and SOIC clip, and found the config similar to yours

15 00 04 00 01

Did you modify the backup of nor-flash and write the complete image, or is there a way to just modify the needed byte?