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No more time travelling

A recent kernel patch fixes the instability that was causing the rcu errors I was having in many of my PinePhone boards.

I have tested this patch on all of my boards and the rcu errors have gone away. I can run them at 624MHz DRAM clock and not have any hangs or time jumps.

The patch has made it into megous kernel, so any distribution that uses it will get the update.

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My PinePhone board tests

I have several PinePhones, from the first BraveHeart release to the last Mobian Community Edition . I also upgraded the BH and Ubports 2GB boards to the 1.2b 3GB version. A total of 9 PCB's.  After experiencing the time jump problem I tested all the boards for stability. There are two tests, compiling and memtester. The first is compiling a project repeatedly for 24 hours. An endless loop of make && make clean. The second test is memtester. I ran it for 20 passes for either 1.6GB or 2.6GB.       sudo memtester 1600m 20 I have a dedicated microSD card for each test. The compiler test is running Manjaro Phosh . memtester is running Arch Linux ARM barebones, which leaves more RAM available for testing. Both Manjaro Phosh and Arch Linux ARM come with multiple u-boot bootloaders that let you change the RAM interface speed. I tested at the highest 624MHz and worked down to slower speeds if there were errors. The results: 3 of the boards time travel. This seems to be a side ef

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