[PATCH] dtc: add setting of physical boot cpu

[Jon Loeliger]

So, like, the other day Michael Neuling mumbled:
> dtc always sets the physical boot CPU to 0xfeedbeef.  Add a -b option to
> set this.    Also add warnings when using the wrong property with the
> wrong blob version.  
> 
> Signed-off-by: Michael Neuling <mikey at neuling.org>

Applied and pushed out to:

     http://www.jdl.com/git_repos

Sorry for the hang time.

Thanks,
jdl