volteer: enable CONFIG_FPU
volteer: enable CONFIG_FPU

this enables FPU support on the EC. we have this enabled on other
npcx7 devices, so there should be no surprises.

BRANCH=none
BUG=none
TEST=booted on volteer

Change-Id: Icba30fdac2c823b0fc4e1754a7de4bb83708bb51
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2211843

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