stm32mp: replace printf by log macro in setup_boot_mode

Replace the remaining printf in setup_boot_mode() by log macro
to handle filtering for log features.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index 782df8b..b88649f 100644
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -482,8 +482,8 @@
 			if (IS_ENABLED(CONFIG_CMD_STM32PROG_SERIAL))
 				gd->flags &= ~(GD_FLG_SILENT |
 					       GD_FLG_DISABLE_CONSOLE);
-			printf("uart%d = %s not found in device tree!\n",
-			       instance + 1, cmd);
+			log_err("uart%d = %s not found in device tree!\n",
+				instance + 1, cmd);
 			break;
 		}
 		sprintf(cmd, "%d", dev_seq(dev));
@@ -494,7 +494,7 @@
 		if (IS_ENABLED(CONFIG_CMD_STM32PROG_SERIAL) && gd->cur_serial_dev != dev) {
 			gd->flags &= ~(GD_FLG_SILENT |
 				       GD_FLG_DISABLE_CONSOLE);
-			printf("serial boot with console enabled!\n");
+			log_info("serial boot with console enabled!\n");
 		}
 		break;
 	case BOOT_SERIAL_USB:
@@ -526,7 +526,7 @@
 
 	switch (forced_mode) {
 	case BOOT_FASTBOOT:
-		printf("Enter fastboot!\n");
+		log_info("Enter fastboot!\n");
 		env_set("preboot", "env set preboot; fastboot 0");
 		break;
 	case BOOT_STM32PROG:
@@ -536,7 +536,7 @@
 	case BOOT_UMS_MMC0:
 	case BOOT_UMS_MMC1:
 	case BOOT_UMS_MMC2:
-		printf("Enter UMS!\n");
+		log_info("Enter UMS!\n");
 		instance = forced_mode - BOOT_UMS_MMC0;
 		sprintf(cmd, "env set preboot; ums 0 mmc %d", instance);
 		env_set("preboot", cmd);