crypto: testmgr - add new testcases for sha3

All current SHA3 test cases are smaller than the SHA3 block size, which
means not all code paths are being exercised. So add a new test case to
each variant, and make one of the existing test cases chunked.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>