Many of us, especially in the embedded computing world, think that 
"legacy bus" is a misnomer.  It's not going away.  What do root PCI 
buses connect to?  At the root of the device tree there is a bus.  This 
patch changes the name from legacy bus to platform bus.  I'm hoping this 
change can be made even this late in the development cycle.  It is a 
pretty small patch but I think that naming is very important.

-Jamey Hicks