littlefs: needs more stack when used

src/modules/logger/Kconfig

@@ -10,3 +10,11 @@ menuconfig USER_LOGGER
 	depends on BOARD_PROTECTED && MODULES_LOGGER
 	---help---
 		Put logger in userspace memory
+
+menuconfig LOGGER_STACK_SIZE
+	int "stack size of logger task"
+	default 3700
+	depends on MODULES_LOGGER
+	---help---
+		Stack size of the logger task. Some configurations require more stack
+		than the default.

src/modules/logger/logger.cpp

@@ -176,7 +176,7 @@ int Logger::task_spawn(int argc, char *argv[])
 	_task_id = px4_task_spawn_cmd("logger",
 				      SCHED_DEFAULT,
 				      SCHED_PRIORITY_LOG_CAPTURE,
-				      PX4_STACK_ADJUSTED(3700),
+				      PX4_STACK_ADJUSTED(CONFIG_LOGGER_STACK_SIZE),
 				      (px4_main_t)&run_trampoline,
 				      (char *const *)argv);