hg: jdk/jdk: 8248190: Enable Power10 system and implement new byte-reverse instructions

[horie at jp.ibm.com]

Changeset: 6a1f088f8130
Author:    mhorie
Date:      2020-08-25 09:01 +0900
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/6a1f088f8130

8248190: Enable Power10 system and implement new byte-reverse instructions
Reviewed-by: mdoerr, stuefe
Contributed-by: Jose Ziviani <joserz at linux.ibm.com>

! src/hotspot/cpu/ppc/assembler_ppc.hpp
! src/hotspot/cpu/ppc/assembler_ppc.inline.hpp
! src/hotspot/cpu/ppc/globals_ppc.hpp
! src/hotspot/cpu/ppc/ppc.ad
! src/hotspot/cpu/ppc/vm_version_ppc.cpp
! src/hotspot/cpu/ppc/vm_version_ppc.hpp