update Microchip id to align with Atmel. Add preinclude file category
<xs:enumeration value="MediaTek:129"/>
<xs:enumeration value="MegaChips:128"/>
<xs:enumeration value="Mentor Graphics Co.:24"/>
- <xs:enumeration value="Microchip:142"/>
+ <xs:enumeration value="Microchip:3"/>
<xs:enumeration value="Micronas:30"/>
<xs:enumeration value="Microsemi:112"/>
<xs:enumeration value="Milandr:99"/>
<xs:enumeration value="utility"/>
<xs:enumeration value="image"/>
<xs:enumeration value="other"/>
+ <xs:enumeration value="preInclude"/> <!-- restricted to a single file in CPDSC file -->
</xs:restriction>
</xs:simpleType>
