RFR(S): 8156025: [JVMCI] make HotSpotResolvedObjectTypeImpl.createField non-public

[Roland Schatz]

Hi,

Please review:
http://cr.openjdk.java.net/~rschatz/JDK-8156025/webrev.00/hotspot.changeset
https://bugs.openjdk.java.net/browse/JDK-8156025

This method is used only internally, it should never have been public.

Thanks,
Roland