Rebase patches from the currently open allwinner-related MRs with minor changes into one MR, so they can be tested together.
Close: #909 (closed), #480 (closed), !1798, !1831, !1832, !1833 (closed)
The individual MRs have already been reviewed by others, and they also look good to me. I'll do the full kernel upgrade test with this one, and try to test anbox networking too, and merge it afterwards.
CC: @alpabrz, @craftyguy, @dylanvanassche, @edp17, @afontain