MFC r257603, r257604:

MFC r257603, r257604:

  Rename WANDBOARD-COMMON to WANDBOARD.common and adjust the configs that
  include it accordingly.  The build machinery for universe and tinderbox
  tries to build every kernel config whose name begins and ends with [A-Z0-9]
  and the common include file that has most of the options isn't buildable
  by itself, so the new lowercase .common will avoid building it.

git-svn-id: svn://svn.freebsd.org/base/stable/10@259361 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f