uboot-2023: fix failsafe boot via env (#107)

uboot-mtk-20230718-09eda825/common/main.c

@@ -64,7 +64,7 @@ void main_loop(void)
 			efi_launch_capsules();
 	}
 
-#ifdef CONFIG_HTTPD
+#ifdef CONFIG_MTK_HTTPD
 	if (env_get("failsafe") != NULL) {
 		env_set("failsafe", NULL);
 		env_save();
@@ -74,7 +74,7 @@ void main_loop(void)
 #endif /* CONFIG_CMD_GL_BTN */
 		run_command("httpd", 0);
 	}
-#endif /* CONFIG_HTTPD */
+#endif /* CONFIG_MTK_HTTPD */
 
 #ifdef CONFIG_CMD_GL_BTN
 	run_command("glbtn", 0);