uname fix


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1066 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/linux-user/i386/syscall.h b/linux-user/i386/syscall.h
index e1f470d..cc0942b 100644
--- a/linux-user/i386/syscall.h
+++ b/linux-user/i386/syscall.h
@@ -218,3 +218,4 @@
     unsigned int __pad;	/* really void* */
 };
 
+#define UNAME_MACHINE "i686"