acpi: Skip writing references for disabled devices in Type-C config

When emitting ACPI tables for the Type-C connector class, skip writing
out a device reference if it is to a disabled device.

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I84cc3e1a54e2b654239ad6e1a4662d582f3465cf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45877
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/acpi/acpigen_usb.c

@@ -71,7 +71,7 @@ static void add_device_ref(struct acpi_dp *dsd,
 	const char *path;
 	char *fresh;
 
-	if (!dev)
+	if (!dev || !dev->enabled)
 		return;
 
 	/*