[NFC] Reordering parameters in getFile and getFileOrSTDIN

In future patches I will be setting the IsText parameter frequently so I will refactor the args to be in the following order. I have removed the FileSize parameter because it is never used.

```
  static ErrorOr<std::unique_ptr<MemoryBuffer>>
  getFile(const Twine &Filename, bool IsText = false,
          bool RequiresNullTerminator = true, bool IsVolatile = false);

  static ErrorOr<std::unique_ptr<MemoryBuffer>>
  getFileOrSTDIN(const Twine &Filename, bool IsText = false,
                 bool RequiresNullTerminator = true);

 static ErrorOr<std::unique_ptr<MB>>
 getFileAux(const Twine &Filename, uint64_t MapSize, uint64_t Offset,
            bool IsText, bool RequiresNullTerminator, bool IsVolatile);

  static ErrorOr<std::unique_ptr<WritableMemoryBuffer>>
  getFile(const Twine &Filename, bool IsVolatile = false);
```

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D99182

GitOrigin-RevId: c83cd8feef7eb8319131d968bb8c94fdc8dbb6a6
3 files changed
tree: 49ac1f3346b2d8a0c53bb6bf01568557df8ba93a
  1. .clang-format
  2. .clang-tidy
  3. .gitignore
  4. CMakeLists.txt
  5. CODE_OWNERS.TXT
  6. COFF/
  7. Common/
  8. ELF/
  9. LICENSE.TXT
  10. MachO/
  11. MinGW/
  12. README.md
  13. cmake/
  14. docs/
  15. include/
  16. lib/
  17. test/
  18. tools/
  19. unittests/
  20. utils/
  21. wasm/
README.md

LLVM Linker (lld)

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