samples: display: Add overlay for FRDM_RW612 boards

Enable low power mode (PM Mode 3) for FRDM_RW612 board.

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
diff --git a/samples/drivers/display/boards/frdm_rw612.conf b/samples/drivers/display/boards/frdm_rw612.conf
new file mode 100644
index 0000000..b0995a9
--- /dev/null
+++ b/samples/drivers/display/boards/frdm_rw612.conf
@@ -0,0 +1,6 @@
+#
+# Copyright 2025 NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+CONFIG_PM=y
diff --git a/samples/drivers/display/boards/frdm_rw612.overlay b/samples/drivers/display/boards/frdm_rw612.overlay
new file mode 100644
index 0000000..65821c8
--- /dev/null
+++ b/samples/drivers/display/boards/frdm_rw612.overlay
@@ -0,0 +1,9 @@
+/*
+ * Copyright 2025 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&standby {
+	status = "okay";
+};