HAL changes for Passpoint T&C

Add SupplicantStaIfaceCallback v1.4 with support for the new
Passpoint T&C notification callback.

Bug: 171928337
Test: atest VtsHalWifiSupplicantV1_4TargetTest
Change-Id: I14f88427a6112b6a097d168c00ece3e36a7bd82f
diff --git a/wifi/supplicant/1.4/Android.bp b/wifi/supplicant/1.4/Android.bp
index 0a039de..2867629 100644
--- a/wifi/supplicant/1.4/Android.bp
+++ b/wifi/supplicant/1.4/Android.bp
@@ -10,6 +10,7 @@
         "ISupplicantStaIface.hal",
         "ISupplicantStaNetwork.hal",
         "ISupplicantStaNetworkCallback.hal",
+        "ISupplicantStaIfaceCallback.hal",
     ],
     interfaces: [
         "android.hardware.wifi.supplicant@1.0",