Documenation: x86 Quark/Galileo remove i586 warning

Leverage patch 13552 by adding USE_MARCH_586 to soc/intel/quark/Kconfig.

TEST=None

Change-Id: Ifac947db53e967b98b9494db3f6c3f8ee039ac73
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/13561
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
diff --git a/Documentation/Intel/SoC/quark.html b/Documentation/Intel/SoC/quark.html
index 14dd507..6ebaa14 100644
--- a/Documentation/Intel/SoC/quark.html
+++ b/Documentation/Intel/SoC/quark.html
@@ -10,35 +10,15 @@
   <tr>
     <td><a target="_blank" href="http://www.intel.com/content/dam/www/public/us/en/images/embedded/16x9/edc-quark-block-diagram-16x9.png"><img alt="Quark Block Diagram" src="http://www.intel.com/content/dam/www/public/us/en/images/embedded/16x9/edc-quark-block-diagram-16x9.png" width=500></a></td>
     <td>
-<table>
-  <tr bgcolor="#ffc0c0">
-    <td>
-Warning: Use of the Intel&reg; Quark&trade; SoC code requires modification of the util/xcompile/xcompile file to change the machine
-architecture from i686 to i586 because the Quark&trade; processor does not support the instructions
-introduced with the Pentium&trade; 6 architecture.
-<ol>
-  <li>Edit the file util/xcompile/xcompile</li>
-  <li>Search for
-<a target="_blank" href="http://review.coreboot.org/gitweb?p=coreboot.git;a=blob;f=util/xcompile/xcompile;hb=HEAD#l185">-march</a></li>
-  <li>Replace i686 with i586</li>
-  <li>Save the result</li>
-</ol>
-Without this change the Quark&trade; processor will halt when it executes one of the
-instructions introduced with the Pentium&trade; 6 architecture.
-    </td>
-  </tr>
-</table>
-<p>
-  The Quark&trade; SoC code was developed using the
-  <a target="_blank" href="../Board/galileo.html">Galileo Gen 2</a>
-  board:
-</p>
-<ul>
-  <li><a target="_blank" href="../x86Development.html">Overall</a> development</li>
-  <li><a target="_blank" href="soc.html">SoC</a> support</li>
-  <li><a target="_blank" href="../fsp1_1.html">FSP 1.1</a> integration</li>
-  <li><a target="_blank" href="../Board/board.html">Board</a> support</li>
-</ul>
+      The Quark&trade; SoC code was developed using the
+      <a target="_blank" href="../Board/galileo.html">Galileo Gen 2</a>
+      board:
+      <ul>
+        <li><a target="_blank" href="../x86Development.html">Overall</a> development</li>
+        <li><a target="_blank" href="soc.html">SoC</a> support</li>
+        <li><a target="_blank" href="../fsp1_1.html">FSP 1.1</a> integration</li>
+        <li><a target="_blank" href="../Board/board.html">Board</a> support</li>
+      </ul>
     </td>
   </tr>
 </table>
@@ -93,6 +73,6 @@
 
 
 <hr>
-<p>Modified: 30 January 2016</p>
+<p>Modified: 1 February 2016</p>
   </body>
 </html>
\ No newline at end of file