HIDL changes to support Stadium Wifi.

Add ISupplicantStaNetwork to allow passing multiple identities to the
Supplicant.

Bug: 30988281
Test: compile
Change-Id: I849e21127be57f9ed6c6779bd97a6367984f6afb
diff --git a/wifi/supplicant/1.1/Android.bp b/wifi/supplicant/1.1/Android.bp
index c8c8a32..fafd6ad 100644
--- a/wifi/supplicant/1.1/Android.bp
+++ b/wifi/supplicant/1.1/Android.bp
@@ -8,6 +8,7 @@
     },
     srcs: [
         "ISupplicant.hal",
+        "ISupplicantStaNetwork.hal",
     ],
     interfaces: [
         "android.hardware.wifi.supplicant@1.0",