RFR: 8345355: [s390x] support for z16 hardware [v2]

[Amit Kumar]

> This was the output for `jdk/bin/java -XX:+Verbose --version` command on a z16 hardware: 
> 
> 
> CPU Version as detected internally: system-z, g9-z15, ldisp_fast, extimm, pcrel_load/store, cmpb, cond_load/store, interlocked_update, txm, vectorinstr, instrext2, venh1, instrext3, venh2, out-of-support_as_of_tbd, aes128, aes192, aes256, sha1, sha256, sha512, ghash
> 
> 
> So the issue is that z16 should be recognized as g10-z16 but instead I got g9-z15. 
> 
> This is the output with current changes: 
> 
> 
> CPU Version as detected internally: system-z, g10-z16, ldisp_fast, extimm, pcrel_load/store, cmpb, cond_load/store, interlocked_update, txm, vectorinstr, instrext2, venh1, instrext3, venh2,bear_enh, sort_enh, nnpa_assist, storage_key_removal, vpack_decimal_enh, out-of-support_as_of_tbd, aes128, aes192, aes256, sha1, sha256, sha512, ghash

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  Correct NNP Assist Facility Mask

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22508/files
  - new: https://git.openjdk.org/jdk/pull/22508/files/0f7e8d08..6b51ebce

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22508&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22508&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22508.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22508/head:pull/22508

PR: https://git.openjdk.org/jdk/pull/22508