[contrib][linux] Fix a warning in zstd_reset_cstream()

[contrib][linux] Fix a warning in zstd_reset_cstream()

- This fixes the below warning:

../lib/zstd/zstd_compress_module.c: In function 'zstd_reset_cstream':
../lib/zstd/zstd_compress_module.c:136:9: warning: 'ZSTD_resetCStream' is deprecated [-Wdeprecated-declarations]
  136 |         return ZSTD_resetCStream(cstream, pledged_src_size);
      |         ^~~~~~
In file included from ../include/linux/zstd.h:26,
                 from ../lib/zstd/zstd_compress_module.c:15:
../include/linux/zstd_lib.h:2277:8: note: declared here
 2277 | size_t ZSTD_resetCStream(ZSTD_CStream* zcs, unsigned long long pledgedSrcSize);
      |        ^~~~~~~~~~~~~~~~~

ZSTD_resetCstream is deprecated and zstd_CCtx_reset is suggested to use hence let's switch to it.

Signed-off-by: Cyber Knight <cyberknight755@gmail.com>