Migrated various package under packages/services/Telecomm/testapps to Androidx

Bug: 76692459
Test: make TelecomTestApps
Change-Id: I27a496b621e8c7cf3ba5b15512f4fcb39db7bc84
diff --git a/testapps/Android.mk b/testapps/Android.mk
index b600dca..0651a87 100644
--- a/testapps/Android.mk
+++ b/testapps/Android.mk
@@ -17,8 +17,9 @@
 LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 
+LOCAL_USE_AAPT2 := true
+LOCAL_STATIC_ANDROID_LIBRARIES := androidx.legacy_legacy-support-v4
 LOCAL_STATIC_JAVA_LIBRARIES := \
-        android-support-v4 \
         android-ex-camera2 \
         guava