board: dh_stm32mp1: Only print board code with CONFIG_SPL_DISPLAY_PRINT

Ensure that the SoM and board code information is only printed when
CONFIG_SPL_DISPLAY_PRINT is set.

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c
index f9cfabe..b933761 100644
--- a/board/dhelectronics/dh_stm32mp1/board.c
+++ b/board/dhelectronics/dh_stm32mp1/board.c
@@ -229,8 +229,9 @@
 
 	gpio_free_list_nodev(gpio, ret);
 
-	printf("Code:  SoM:rev=%d,ddr3=%d Board:rev=%d\n",
-		somcode, ddr3code, brdcode);
+	if (CONFIG_IS_ENABLED(DISPLAY_PRINT))
+		printf("Code:  SoM:rev=%d,ddr3=%d Board:rev=%d\n",
+		       somcode, ddr3code, brdcode);
 }
 
 int board_stm32mp1_ddr_config_name_match(struct udevice *dev,