stm32mp1: use new function led default state

Initialize the led with the default state defined in device tree.
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com>

board/st/stm32mp1/stm32mp1.c

@@ -4,6 +4,7 @@
  */
 #include <config.h>
 #include <common.h>
+#include <led.h>
 #include <asm/arch/stm32.h>
 
 /*
@@ -22,5 +23,8 @@ int board_init(void)
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = STM32_DDR_BASE + 0x100;
 
+	if (IS_ENABLED(CONFIG_LED))
+		led_default_state();
+
 	return 0;
 }