qemu: bt device isn't always hanging off /

Just use the normal for_each_compatible instead.

Otherwise in the qemu model as executed by op-test,
we wouldn't go down the astbmc_init() path, thus not having flash.

Cc: stable # v6.2+
Fixes: 2f0b6af
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

platforms/qemu/qemu.c

@@ -33,9 +33,8 @@ static bool qemu_probe(void)
         astbmc_early_init();
 
 	/* check if the BT device was defined by QEMU */
-	dt_for_each_child(dt_root, n) {
-		if (dt_node_is_compatible(n, "bt"))
-		       bt_device_present = true;
+	dt_for_each_compatible(dt_root, n, "bt") {
+		bt_device_present = true;
 	}
 
 	return true;