drivers: sm: bind child sm devices in the device tree

One well-known sm child device that provides secure power control is the
Secure Power Controller. This device utilizes SMC calls to communicate
with power domains on the secure monitor side.

Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Signed-off-by: Alexey Romanov <avromanov@salutedevices.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231101140500.9025-3-avromanov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/drivers/sm/meson-sm.c b/drivers/sm/meson-sm.c
index 25adaf4..15b3b0e 100644
--- a/drivers/sm/meson-sm.c
+++ b/drivers/sm/meson-sm.c
@@ -193,6 +193,7 @@
 	.id = UCLASS_SM,
 	.of_match = meson_sm_ids,
 	.probe = meson_sm_probe,
+	.bind = dm_scan_fdt_dev,
 	.priv_auto = sizeof(struct meson_sm_priv),
 	.ops = &sm_ops,
 };