Uprev IWifiEventCallback.hal to 1.5

Bug: 178126071
Test: atest VtsHalWifiV1_5TargetTest
      wifi basic function is workable
Change-Id: I5f1897b6d4190d80eaf25eccea04ccfdbe4884c7
diff --git a/wifi/1.5/Android.bp b/wifi/1.5/Android.bp
index 7c04c69..0887c6b 100644
--- a/wifi/1.5/Android.bp
+++ b/wifi/1.5/Android.bp
@@ -20,6 +20,7 @@
         "IWifiNanIface.hal",
         "IWifiNanIfaceEventCallback.hal",
         "IWifiStaIface.hal",
+        "IWifiEventCallback.hal",
     ],
     interfaces: [
         "android.hardware.wifi@1.0",