fix(mars): use HPCC bfloat/fp16 headers instead of MACA

[Ceng23333]

Summary

• Switch Mars dtype headers in src/native/cuda/mars/data_type_.h from MACA (maca_bfloat16.h, maca_fp16.h, __maca_bfloat16) to HPCC (hpcc_bfloat16.h, hpcc_fp16.h, __hpcc_bfloat16).
• Add cuda_bfloat16 / cuda_bfloat162 aliases to the HPCC bfloat types for Mars.

Motivation

Mars/HPCC builds link the HPCC toolkit, not MACA. The Mars backend landed on master with MetaX-style MACA half/bfloat headers; that breaks or mis-types Mars builds that compile against /opt/hpcc includes. This aligns Mars TypeMap with the actual vendor headers.

Related InfiniOps Mars stack (platform/kernels/smoke): InfiniTensor/InfiniOps#941–#943.

Type of Change

• feat - new feature / new backend capability / new public API
• fix - bug fix
• perf - performance improvement without behavior change
• refactor - code restructuring without behavior change
• test - adding or fixing tests only
• docs - documentation only
• build / ci - build system or CI configuration
• chore - tooling, formatting, or other non-code changes
• Breaking change (requires a ! in the Conventional Commits prefix or a BREAKING CHANGE: footer)

Platforms Affected

• CPU (WITH_CPU)
• NVIDIA (WITH_NVIDIA)
• Iluvatar (WITH_ILUVATAR)
• Hygon (WITH_HYGON)
• MetaX (WITH_METAX)
• Moore (WITH_MOORE)
• Cambricon (WITH_CAMBRICON)
• Ascend (WITH_ASCEND)
• Build system / CMake / generated headers
• Public headers / installed consumer API
• Documentation only

Note: Mars / HPCC (WITH_MARS) — Mars dtype header fix only.

Smoke Build and Test Result

Host: MetaX X203 / HPCC (Mars integration prefix).

cmake -S . -B build-mars-rt \
-DWITH_CPU=ON -DWITH_MARS=ON \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=/tmp/infinirt-mars-prefix
cmake --build build-mars-rt -j$(nproc)
cmake --install build-mars-rt
# Built and installed libinfinirt with Mars backend

Test Results on Supported Platforms

Platform	Affected	Build / Smoke Result	Full Result / Notes
CPU	no	N/A - not affected
NVIDIA	no	N/A - not affected
Iluvatar	no	N/A - not affected
Hygon	no	N/A - not affected
MetaX	no	N/A - not affected
Moore	no	N/A - not affected
Cambricon	no	N/A - not affected
Ascend	no	N/A - not affected
Mars/HPCC (WITH_MARS)	yes	smoke build passed (WITH_MARS=ON)	Used in InfiniLM Mars integration prefix consumed by InfiniOps Mars smoke.

Full `ctest` output (optional)

N/A — Mars-only header fix; no new ctest cases in this PR.

Benchmark / Performance Impact

N/A

Notes for Reviewers

• Single-file change; no CMake or dispatch changes.
• Complements InfiniOps Mars enablement (feat(mars): add WITH_MARS platform and htcc wrapper InfiniOps#941–#943): consumers should build/install InfiniRT with WITH_MARS=ON against HPCC before pointing INFINI_RT_ROOT at the prefix.