Chuwi HI 13 fully support on Fedora 28

I just reinstall my Chuwi HI13 using Fedora 28 and just discovered that it is now fully supported out of the box. No more mess with Grub and requirements to change the bootloader.

This tablet is finally totally Linux friendly.

Still one issue: the screen does not rotate properly because of the ACCEL_MOUNT_MATRIX incorrect value but it is easy to solve :