Marek Vasut authored Sep 05, 2019 and Lucas Stach committed Oct 18, 2019

Have each context track which resources it marked as pending read and
pending write. Have each resource track in which context it is pending.
This way, it is possible to identify when a resource is both pending
read and pending write at the same time. Moreover, the status field
can be correctly calculated and updated when necessary.

Signed-off-by: Marek Vasut <marex@denx.de>