add new vendor Socionext
diff --git a/CMSIS/Utilities/PACK.xsd b/CMSIS/Utilities/PACK.xsd
index a3cd9d7..d5e6d23 100644
--- a/CMSIS/Utilities/PACK.xsd
+++ b/CMSIS/Utilities/PACK.xsd
@@ -226,6 +226,7 @@
<xs:enumeration value="Sinowealth:149" />
<xs:enumeration value="SmartChip:156" />
<xs:enumeration value="SONiX:110" />
+ <xs:enumeration value="Socionext:171" />
<xs:enumeration value="Spansion:100" />
<xs:enumeration value="STMicroelectronics:13" />
<xs:enumeration value="Sunrise Micro Devices:121" />