manifest: add wigigp2p instance for supplicant

For supporting wigig P2P inside wifi framework,
a seperate wpa_supplicant instance is started with
wigigp2p service name. Add this instance to the
device matrix.

Change-Id: I9b675386eb68c85ee98481ac057cde32bc5f6a6a

manifest.xml

@@ -313,6 +313,7 @@ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
         <interface>
             <name>ISupplicant</name>
             <instance>default</instance>
+            <instance>wigigp2p</instance>
         </interface>
     </hal>
     <hal format="hidl">