Added alphaone to mach-types

Signed-off-by: Mike Lewis <mikelewis@alphalem.com>
Created new dir based on ti/beagle

And renamed beagle files to alphaone.

Signed-off-by: Mike Lewis <mikelewis@alphalem.com>
Added authorship headers to board files

Signed-off-by: Mike Lewis <mikelewis@alphalem.com>