Kbuild: Simplify prepare targets.

This commit organizes the prepare sequence targets removing
some unused targets left behind as a relique from the linux build.

Change-Id: I7b215865e2c06f9c0138806bce9fce9191d07d8b
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
1 file changed