RFR: 8370225: RISC-V: move verify_frame_setup into ASSERT

[Hamlin Li]

Hi,
Can you help to review this patch?
`verify_frame_setup` should be only declared/implemented/invoked in debug version.
This is a leftover by https://bugs.openjdk.org/browse/JDK-8369947.

Thanks!

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Commit messages:
 - initial commit
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - ... and 5 more: https://git.openjdk.org/jdk/compare/f158451c...47ee73bc

Changes: https://git.openjdk.org/jdk/pull/27894/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27894&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370225
  Stats: 9 lines in 2 files changed: 7 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27894.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27894/head:pull/27894

PR: https://git.openjdk.org/jdk/pull/27894