rt946x: Fix MT6370 charger type detection
rt946x: Fix MT6370 charger type detection

add bc12 workaround when bc12 detect SDP

BRANCH=kukui
BUG=b:128049211
TEST=boot kukui, slow plug in DCP, check bc12 detect chg type

Change-Id: Ie9b8780fdad6e061e967ebb127b27bf63a11db2e
Signed-off-by: Gene Chen <0bfd40b09f0ce30b54e0e7b36d16a9aecdaae70b@mediatek.corp-partner.google.com>
Signed-off-by: Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1568887
Reviewed-by: Ting Shen <c671d3efec3d7e7e285f3788bf0d1ba4c8605b78@chromium.org>

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