It doesn't prove anything of the sort; we've already known for a long time that TI was being open with OMAP3, but that doesn't imply that they can or will change licenses on already released products, so it says nothing about whose lawyers are the problem with various OMAP2 drivers.

There are costs associated with going back through and making sure all IP involved belongs to TI, or relicensing under appropriate terms from the actual owners, so it's quite conceivable that they would change their position for future releases (and license IP suitably up front) but not find it worth the cost to redo old stuff.