cpu/microcode: Remove EXTERNAL / ADDED_DURING_BUILD variables

There has been a concerted effort to clean up coreboot's microcode
handling that has included a move away from coreboot-specific
microcode file collections.  As a result, the ability to specify
a single microcode file to be added to the image is of less utility
than before.

NOTE: This patch remove the built-in external microcode feature,
however the user can still specify no microcode during build and
manually add the correct microcode file(s) to the CBFS image after
the build is complete.

Change-Id: Ifea94c21e531a74953f5a0e2f489378c20ef3b5c
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11903
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)

0 files changed, 0 insertions, 0 deletions