First step
1. Download AIK Mobile installer from here :
https://drive.google.com/open?id=15KNo2YGHTLKt48UX8eKaX-cMGbtj6SHE
2. Flash it from TWRP.
3. Make 2 folder in your sdcard like "boot base & boot port".
4. Copy boot.img base to folder data/local/AIK-mobile/here.
6. Now you will get 2 folder, split_img & ramdisk. Move two folders (ramdisk , split_img & boot.img) into the folder that you created earlier, boot base folder.
7. Unpack boot.img from port rom.
8. Copy file boot.img_zimage from folder boot base/split_img to folder split_img (boot port).
9. Click repackimg.sh & choose execute, you will get new file image-new.img. move to folder rom you want to port. Rename it to boot.img.
10. Done.