tools: binman: control.py: Propagate bootph-all/bootph-some-ram properties to supernodes

tools: binman: control.py: Propagate bootph-all/bootph-some-ram properties to supernodes

As per bootph schema, bootph-* property in child node should be
implied in their parent, but this feature is not implemented in
the U-Boot proper stage (before relocation) resulting in devices
not being bound because of the missing bootph-all or bootph-some-ram
property in the parent node.

To mitigate this issue, add a function to scan through all the nodes
in the device-tree for bootph-all and bootph-some-ram properties. If
found, propagate it to all of its parent nodes up the hierarchy.

Signed-off-by: Moteen Shah <m-shah@ti.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>