stm32: Convert serial driver to DM

Signed-off-by: Kamil Lulko <kamil.lulko@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

include/dm/platform_data/serial_stm32.h

@@ -0,0 +1,16 @@
+/*
+ * (C) Copyright 2015
+ * Kamil Lulko, <kamil.lulko@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __SERIAL_STM32_H
+#define __SERIAL_STM32_H
+
+/* Information about a serial port */
+struct stm32_serial_platdata {
+	struct stm32_usart *base;  /* address of registers in physical memory */
+};
+
+#endif /* __SERIAL_STM32_H */