To minimize the number of test binaries, we should put as many tests in
a single binary as possible. This CL merges kb_debouncing and
kb_deghosting and renames them to kb_scan.
BUG=chrome-os-partner:18598
TEST=Run on Spring
BRANCH=None
Change-Id: I876363ba68c692a7af10badfa474a2ea9a9d002c
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47980