RFR: 8370920: [s390] C2: add instruction size in s390.ad file

[Harshit470250]

This pr adds the size of the match rule nodes.

There were a lot of nodes for which the size was variable, for those node I have taken the maximum possible size.

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Commit messages:
 - Merge remote-tracking branch 'origin/master'
 - remove whitespace
 - Resolved a bug
 - remove TODO comments
 - final size added
 - Final sizes
 - oop_decoder and load_const_optimized
 - error fix and added more sizes
 - upto line 9078
 - upto line 9283
 - ... and 1 more: https://git.openjdk.org/jdk/compare/f3dfdfa3...c253449a

Changes: https://git.openjdk.org/jdk/pull/28054/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28054&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370920
  Stats: 155 lines in 1 file changed: 2 ins; 0 del; 153 mod
  Patch: https://git.openjdk.org/jdk/pull/28054.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28054/head:pull/28054

PR: https://git.openjdk.org/jdk/pull/28054