test: Add AES-GCM decrypt benchmark
test: Add AES-GCM decrypt benchmark

BUG=b:235476822
TEST=test/run_device_tests.py -b bloonchipper -t aes
TEST=make run-aes
BRANCH=none

Signed-off-by: Andrea Grandi <f017805e76e0e7a74072a3bac1b6e29e65eedeab@google.com>
Change-Id: Ic117d7a137065729e284b3c435062d4ce473e8d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4032755
Code-Coverage: Zoss <345cf107e82c70959d46f59d98bddc98ce458aff@prod.google.com>
Reviewed-by: Bobby Casey <a3c107f0b4efaee07148ab0813ba992bba562a69@google.com>

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