From 4f9638440ae73408e1580fc3a7c3b11da8e0b77c Mon Sep 17 00:00:00 2001
From: wuyangyong <wuyangyong@gmail.com>
Date: Wed, 15 Jun 2011 02:15:03 +0000
Subject: [PATCH] add stm32f20x

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1510 bbd45198-f89e-11dd-88c7-29a3b14d5316