devicetree: Drop dummy root_dev ops

This is just dead code.

Should we decide that we want some of these calls made, they would
be implemented in the mainboard context.

Change-Id: I1f097c8da722f3afab9aa1c80b96590c7ca457d5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8532
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2 files changed