On some CPU cores, the compiler needs an helper to perform the 64-bit
multiplication.
As the only 64-bit multiplication in the code base is not necessary, fix
it rather than adding the helper.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=build for Cortex-M0 platform.
Change-Id: Id5d6b4b6641f81732a456dacb78dee7262f6729d
Reviewed-on: https://chromium-review.googlesource.com/188980
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>