shields: st_stm32f4dis_cam: add a stm32h747i_disco//m7 overlay

Add an overlay allowing to use the stm32f4dis_cam shield on the
stm32h747i_disco board.

Signed-off-by: Alain Volmat <[email protected]>

Author: Alain Volmat

boards/shields/st_stm32f4dis_cam/boards/stm32h747i_disco_stm32h747xx_m7.overlay

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2025 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dma1 {
+	status = "okay";
+};
+
+&dmamux1 {
+	status = "okay";
+};