Differences in hardware revision 2.2 vs. 2.3?

[tllim]

https://wiki.pine64.org/wiki/SOPine_Clusterboard

Sadly this page does not specify and differences between the 2.2 and 2.3 hardware revisions, and it seems something changed
on how the emmc is used, as the current Armbian images seem to only have working emmc with hardware revision 2.3

If there was some details from Pine64 what was changed, maybe it would be possible to fix the Armbian image for version 2.2.

@tllim

I just aware there is only one Clusterboard version and will check with hardware team.