gperf: upgrade 3.1 -> 3.3

gperf: upgrade 3.1 -> 3.3

Both patches were dropped, because they are included in this release.

License-Update: copyright date Update

Changelog:
3.3:
* Speedup: gperf is now between 2x and 2.5x faster.

3.2:
* The generated code avoids several types of warnings:
  - "implicit fallthrough" warnings in 'switch' statements.
  - "unused parameter" warnings regarding 'str' or 'len'.
  - "missing initializer for field ..." warnings.
  - "zero as null pointer constant" warnings.

* The input file may now use Windows line terminators (CR/LF) instead of
  Unix line terminators (LF).
  Note: This is an incompatible change. If you want to use a keyword that
  ends in a CR byte, such as xyz<CR>, write it as "xyz\r".

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>