Update language to comply with Android's inclusive language guidance.

See https://source.android.com/setup/contribute/respectful-code for

Bug: 162864134
Test: build and flash
Change-Id: I975558d229ba9da486153d32bcdb469d7c38c345
diff --git a/service/Android.bp b/service/Android.bp
index a76c654..1a3873d 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -71,7 +71,7 @@
         "car-frameworks-service",
     ],
 
-    required: ["privapp_whitelist_com.android.car"],
+    required: ["allowed_privapp_com.android.car"],
 
     // Disable build in PDK, missing aidl import breaks build
     product_variables: {