chore: update OAT.xml

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ifa8351b0919b53f012618a4ac80e3c704b409382

OAT.xml

@@ -22,7 +22,7 @@
         <licensefile>LICENSE.txt</licensefile>
         <policylist>
             <policy name="projectPolicy" desc="">
-                <policyitem type="compatibility" name="BSD-1-Clause" path=".*" desc="BSD-1-Clause like license"/>
+                <policyitem type="compatibility" name="GPL" path="LICENSE.txt" desc="this is the license file, declaring that FatFs is compatible with GNU GPL"/>
             </policy>
         </policylist>
         <filefilterlist>