Move permission xml out of the APEX

It's installed to the vendor partition so that AVF enablement can be
decided in the vendor partition (even if the virt APEX is fully
installed in the system partition).

Bug: 356792213
Test: watch TH
Change-Id: Ic2841f142dd8fdd287c3b9616a927a5b1914b3ee
diff --git a/build/apex/permissions/Android.bp b/build/apex/permissions/Android.bp
index 0c925ce..678a4f2 100644
--- a/build/apex/permissions/Android.bp
+++ b/build/apex/permissions/Android.bp
@@ -21,4 +21,5 @@
     name: "features_com.android.virt.xml",
     sub_dir: "permissions",
     src: "features_com.android.virt.xml",
+    soc_specific: true,
 }