main/linux-postmarketos-exynos4: add s6evr02 panel

This adds the s6evr02 panel which the Samsung Galaxy Note II uses. After this is merged I will create another MR for t0lte to be added as a new device.

PLEASE NOTE - I did not write the panel driver, but merely brought up an old driver that worked with mainline a few years ago. The driver was written by forkbomb and can be found here: https://github.com/fourkbomb/linux/blob/master/drivers/gpu/drm/panel/panel-samsung-s6evr02.c Given it is based on another panel driver that is still in mainline today, I applied the commits that that panel driver underwent between then and now, and it works.