Provide an option for including the NHLT blobs within the glados mainboard directory while also adding the ACPI NHLT table generation that the current hardware supports. BUG=chrome-os-partner:44481 BRANCH=None TEST=Built and booted. Headphones, speakers, and mic on camera emits and creates sound albeit not the greatest. Change-Id: I6e36c0a99a73cdcb2bf6ccfbfc886a594f989a39 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 5b0383a93f054011dd7c18519ece4e6f1944366d Original-Change-Id: I6f8bd15c72fa89756382af99bddb6cb6abe89905 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/313794 Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/12939 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>