On max17055, current/temperature register values are in 2's
complement format.
Therefore we need to consider the case of negative values before
doing bitwise operation.
BUG=b:63870414
BRANCH=none
TEST=run 'battery' command and confirm the reported discharge
current looks reasonable.
Change-Id: Iea0c554aecf2b410fc27b547e01ee7a583a0dd00
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/617654
Commit-Ready: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
20f05a3488