I have u-boot-image and ubi-root image if I extract kernel from partition in router would that be everything needed to create Openwrt firmware for router
No dude, you won't, not even close.
How many times do we have to tell you this ?
You're flogging a dead horse.
no, you have to wait until the git PR posted two weeks ago gets merged, it could take months, if you're unlucky.
And then you have to do your part of the development, providing a tested PR to add support for this device based on the ipq50xx target. But based on this thread, I don't think you have identified what this development entails at this point - mix- and matching binary components of the OEM firmware is not involved in this.
Video on CH341A programmer
Extract firmware from router
Cool, another thing that won't get you any closer to Openwrt.