crc32 feature testing for ppc64le

We have recently added ppc64le support [(https://github.com/apple/foundationdb/pull/6384)](url) and the same is merged with upstream.
Now we are adding a crc32_vpmsum feature [(https://github.com/antonblanchard/crc32-vpmsum)](url) for the same.
Integrated required files(crc32.S, crc32_wrapper.c, crc32_cosntants.h, ppc-opcode.h) /code(wrapper function- crc32_vpmsum() call inside foundationDb) to get the crc32_vpmsum feature tested.
currently, we are unable to find a suitable test case in existing tests to validate the changes.
kindly guide for the same.

for more reference, attached is a system config screenshot on which we are trying to execute.

Start by reading the integrated crc32.S, crc32_wrapper.c, crc32_cosntants.h, and ppc-opcode.h files and the crc32_vpmsum() wrapper call; inspect existing FoundationDB tests for a suitable validation path. Done means identifying and adding a test that exercises the ppc64le CRC32 feature and confirms the expected result.

Written by the indexing model from the issue text.