Fix build failure in CtsNNAPITestCases

Add missing libgmock_ndk dependency to CtsNNAPITestCases to fix build
failure.

Bug: 130342510
Test: build CtsNNAPITestCases
Change-Id: I6b91bb9a8f455d7acd7ccfa89b57344ccae1e95b
diff --git a/tests/tests/neuralnetworks/Android.mk b/tests/tests/neuralnetworks/Android.mk
index 4b15c9c..5c4814b 100644
--- a/tests/tests/neuralnetworks/Android.mk
+++ b/tests/tests/neuralnetworks/Android.mk
@@ -28,7 +28,7 @@
 LOCAL_WHOLE_STATIC_LIBRARIES := CtsNNAPITests_static
 
 LOCAL_SHARED_LIBRARIES := libandroid liblog libneuralnetworks
-LOCAL_STATIC_LIBRARIES := libbase_ndk libgtest_ndk_c++
+LOCAL_STATIC_LIBRARIES := libbase_ndk libgtest_ndk_c++ libgmock_ndk
 LOCAL_CTS_TEST_PACKAGE := android.neuralnetworks
 
 # Tag this module as a cts test artifact