Update XSD to support metadata in interconnect

Signed-off-by: Elms <elms@freshred.net>

fpga_architecture.xsd

diff --git a/fpga_architecture.xsd b/fpga_architecture.xsd
index 3a9ece3..70018d8 100644
--- a/fpga_architecture.xsd
+++ b/fpga_architecture.xsd
@@ -395,6 +395,7 @@
     <xs:choice maxOccurs="unbounded">

       <xs:element name="pack_pattern" type="pack_pattern"/>

       <xs:group ref="timing_group" minOccurs="0"/>

+      <xs:element name="metadata" type="metadata"/>

     </xs:choice>

     <xs:attribute name="name" type="xs:string" use="required"/>

     <xs:attribute name="input" type="stringlist" use="required"/>