asurada: Enable LTO
asurada: Enable LTO

Saves space and, in particular, makes division by zero more
efficient.

BRANCH=none
BUG=b:173969773
TEST=build and boot asurada

Change-Id: Ieb01c9c72987e7d05f6942fb95b71d53c25cc344
Signed-off-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2605038
Reviewed-by: Eric Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec