Add visibility of this lib to wifi tests

Test: this builds, and subsequent patches using this work
Change-Id: I8d59b39e6554eccd22695dda47c41b1f2f661495
diff --git a/staticlibs/Android.bp b/staticlibs/Android.bp
index f4799f0..e5cc8b1 100644
--- a/staticlibs/Android.bp
+++ b/staticlibs/Android.bp
@@ -126,6 +126,7 @@
         "//frameworks/base/packages/Tethering",
         "//frameworks/opt/net/ike",
         "//frameworks/opt/telephony",
+        "//frameworks/base/wifi:__subpackages__",
         "//packages/modules/NetworkStack:__subpackages__",
         "//packages/modules/CaptivePortalLogin",
         "//frameworks/libs/net/common/tests:__subpackages__",