Add apex_available for SettingsLib libraries used by PermissionController.

Bug: 14490549
Test: presubmit
Change-Id: If7796ac8686c03b7b18017e81db8ab7fe7952ba2
diff --git a/packages/SettingsLib/TwoTargetPreference/Android.bp b/packages/SettingsLib/TwoTargetPreference/Android.bp
index 078e8c3..b32d5b4 100644
--- a/packages/SettingsLib/TwoTargetPreference/Android.bp
+++ b/packages/SettingsLib/TwoTargetPreference/Android.bp
@@ -19,4 +19,8 @@
     ],
     sdk_version: "system_current",
     min_sdk_version: "21",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.permission",
+    ],
 }