posix.cfg: Added support for uname().

cfg/posix.cfg

@@ -977,6 +977,7 @@
   <podtype name="dev_t"/>
   <podtype name="key_t"/>
   <podtype name="tms"/>
+  <podtype name="utsname"/>
   <podtype name="pthread_attr_t"/>
   <podtype name="pthread_cond_t"/>
   <podtype name="pthread_condattr_t"/>
@@ -1262,6 +1263,13 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- int uname(struct utsname *buf); -->
+  <function name="uname">
+    <noreturn>false</noreturn>
+    <arg nr="1">
+      <not-null/>
+    </arg>
+  </function>
   <!-- http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/pwd.h.html -->
   <podtype name="passwd"/>
   <!--void           endpwent(void); -->