Add mechanism for Parcel to not allow FDs to be written to it.

This is to help implement issue #5224703.

Change-Id: I026a5890495537d15b57fe61227a640aac806d46
diff --git a/include/utils/Errors.h b/include/utils/Errors.h
index 81f818b..0b75b19 100644
--- a/include/utils/Errors.h
+++ b/include/utils/Errors.h
@@ -72,6 +72,7 @@
     TIMED_OUT           = 0x80000005,
     UNKNOWN_TRANSACTION = 0x80000006,
 #endif    
+    FDS_NOT_ALLOWED     = 0x80000007,
 };
 
 // Restore define; enumeration is in "android" namespace, so the value defined