main/linux-postmarketos-allwinner: upgrade to 5.9.8_git20201115

While at it, include 'Allow leds for pinephone dtb in suspend' patch from !1691 (closed).

Changes:

• https://github.com/megous/linux/releases/tag/orange-pi-5.9-20201110-1601

Please help out with testing.

How to test:

• https://wiki.postmarketos.org/wiki/Kernel_upgrade_testing

TODO:

• test on pinephone
• test on pinetab

(We might skip the pinetab test to speed this up, as the changelog doesn't seem to have changes relevant to the pinetab.)