RFR: 8319556: Harmonize interface formatting in the FFM API

[Per Minborg]

This PR proposes to remove two `permits` declarations where the line overflows the stipulated maximum column with. Also, it proposes to harmonize the layout of `permit` formatting so they are the the same throughout the API.

This PR might be perceived as over worked but I think it nice to get consistency across the API now that we go final.

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Commit messages:
 - Reformat interface permit declarations

Changes: https://git.openjdk.org/jdk/pull/16528/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16528&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319556
  Stats: 44 lines in 11 files changed: 21 ins; 0 del; 23 mod
  Patch: https://git.openjdk.org/jdk/pull/16528.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16528/head:pull/16528

PR: https://git.openjdk.org/jdk/pull/16528