[PATCH 39/79] [DebugInfo] Add Flag parameter to DebugTypeBasic (#1965)

[PATCH 39/79] [DebugInfo] Add Flag parameter to DebugTypeBasic (#1965)

It can only be FlagUnknownPhysicalLayout. There is no way we can
generate it LLVM environment and get use of it, hence the patch just
ignores it if it come from another SPIR-V generator.

In general, there are following possible debug flags for DIBasicType:
BigEndian, LittleEndian and Artificial. There is not way that clang will
ever generate them, but that can be produced by manually writing
assembly and transforming it to LLVM IR. While it can be potential
improvement for the future - I don't see it useful to add to the spec
and implementation right now.

Signed-off-by: Sidorov, Dmitry <dmitry.sidorov@intel.com>
Gbp-Pq: Name 0039-DebugInfo-Add-Flag-parameter-to-DebugTypeBasic-1965.patch