Revert "Use apex_available for PermissionController."

This reverts commit a95249564340bc0fc0337335ef1ddc34acd3a688.

Reason for revert: PermissionController may need to be built outside of APEX

Fixes: 148957736
Change-Id: I80a2cd666ea5028741250dd2cebf2bd7d7b331ad
diff --git a/apex/apex.go b/apex/apex.go
index 23dffcb..3d1b20e 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -280,6 +280,10 @@
 	//
 	// Module separator
 	//
+	m["com.android.permission"] = []string{"GooglePermissionController", "PermissionController"}
+	//
+	// Module separator
+	//
 	m["com.android.runtime"] = []string{
 		"libbase",
 		"libc++",