Add option "--disable-spirv-validation" to opencl_conformance_tests_full_spirv.csv

While updating to use TAG v2021-06-16-00 for OpenCL certification, we found spirv-val check is enabled by https://github.com/KhronosGroup/OpenCL-CTS/pull/1108. More failure was disclosed since the SPIR-V LLVM Translator and SPIR-V validator is still not in good shape.
We are suggested to collect logs with SPIR-V validation disabled until the validator and translator are in better shape, but the current CSV files did not add this option by default.

Inspect opencl_conformance_tests_full_spirv.csv and the behavior introduced by pull request 1108. Add the --disable-spirv-validation option as the issue requests, then verify that the CSV remains valid and the option is present in the intended test entries.

Written by the indexing model from the issue text.