Added SILAN

CMSIS/Utilities/PACK.xsd

@@ -211,6 +211,7 @@
       <xs:enumeration value="Renesas:117" />
       <xs:enumeration value="ROHM:103" />
       <xs:enumeration value="Samsung:47" />
+      <xs:enumeration value="SILAN:164" />
       <xs:enumeration value="Silergy Corp:139" />
       <xs:enumeration value="Silicon Labs:21" />
       <xs:enumeration value="Sinowealth:149" />