Merge patch series "Enable OF_UPSTREAM for J721s2 and AM68"

Manorit Chawdhry <m-chawdhry@ti.com> says:

Series splits AM68 and J721s2 support along with enabling OF_UPSTREAM
and adding stdboot support for both the platforms.

Boot logs: https://gist.github.com/manorit2001/6c669e4273933bc46c3b28a631a96ae3