atlas: Always advertise DFP_D connected
atlas: Always advertise DFP_D connected

the VESA DisplayPort Alt Mode on USB Type-C Standard section 5.2.3
requires that DP alt mode capable devices permanently set the
connected status bit.

BRANCH=none
BUG=chromium:1022256
TEST=verified improved interop with caldigit dock

Change-Id: If439186120380cdc11eb8ea69a6b3d5d3d39b0a6
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1903647
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

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