Recent Kernel versions and A2 SD cards

[CAFxX]

Just as a small note since https://github.com/ThomasKaiser/Knowledge/blob/master/articles/A1_and_A2_rated_SD_cards.md shows up pretty high in search results: it would be great re-testing now A2 cards, as it seems that in more recent Linux versions the SD driver gained the ability to enable some of those A2 capabilities (specifically, caching) that were unimplemented before: https://forum.odroid.com/viewtopic.php?t=44076

It also seems like, at least on rpi, they have also implemented command queueing - but this doesn't seem, unfortunately, to have made it upstream yet: https://github.com/raspberrypi/linux/pull/6046