Includes SecondaryHome into the priv app whitelist.

- Add android.permission.INTERACT_ACROSS_USERS for the CarNotificationLib.

Bug: 156114875
Test: check if SecondayHome is shown (in gcar_hl_md_emu_x86).
Change-Id: I79ae64b90a52235876a6e51ad01ae70def1bf1fa

data/etc/car/Android.bp

@@ -86,6 +86,13 @@ prebuilt_etc {
     filename_from_src: true,
 }
 
+prebuilt_etc {
+    name: "privapp_whitelist_com.android.car.secondaryhome",
+    sub_dir: "permissions",
+    src: "com.android.car.secondaryhome.xml",
+    filename_from_src: true,
+}
+
 prebuilt_etc {
     name: "privapp_whitelist_com.android.car.settings",
     sub_dir: "permissions",

data/etc/car/com.android.car.secondaryhome.xml

@@ -20,5 +20,7 @@
         <permission name="android.permission.ACTIVITY_EMBEDDING"/>
         <!-- Required to send notification to current user-->
         <permission name="android.permission.MANAGE_USERS"/>
+        <!-- Required for CarNotificationLib -->
+        <permission name="android.permission.INTERACT_ACROSS_USERS"/>
     </privapp-permissions>
 </permissions>