platform/chrome: cros_ec_typec: Update port DP VDO

The port advertising DP support is a Type-C receptacle. Fix the port's
DisplayPort VDO to reflect this.

Fixes: 1903adae ("platform/chrome: cros_ec_typec: Add bit offset for DP VDO")
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20221228004648.793339-6-pmalani@chromium.org

drivers/platform/chrome/cros_ec_typec.c

@@ -27,7 +27,7 @@
 #define DRV_NAME "cros-ec-typec"
 
 #define DP_PORT_VDO	(DP_CONF_SET_PIN_ASSIGN(BIT(DP_PIN_ASSIGN_C) | BIT(DP_PIN_ASSIGN_D)) | \
-				DP_CAP_DFP_D)
+				DP_CAP_DFP_D | DP_CAP_RECEPTACLE)
 
 /* Supported alt modes. */
 enum {