sweetberry is an stm32f446 based power monitoring
board, with 48 channels of INA current sense chips
BUG=chromium:608039
TEST=boots
BRANCH=none
Change-Id: If263bcee3a648ba3605f991999d481b7a0e2a1db
Signed-off-by: Nick Sanders <nsanders@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/370718
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>