ck: add CK_USE_GFX95 macro

[yingluAMD]

Proposed changes

PR #3248 introduced a GPU architecture related template config in conv_bwd_data instances. It lead to MIOpen CI fail because this filed is used as host code in MIOpen which doesn't have __gfx950__ macro.
This PR defined a new macro CK_USE_GFX95 to fix this issue. MIOpen will also enable this macro on gfx950 platform.

Checklist

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• I have added tests relevant to the introduced functionality, and the unit tests are passing locally
• I have added the test to REGRESSION_TESTS list defined at the top of CMakeLists.txt in tests/CMakeLists.txt, IF the test takes more than 30 seconds to run.
• I have added inline documentation which enables the maintainers with understanding the motivation
• I have removed the stale documentation which is no longer relevant after this pull request
• (If this change is user-facing) I have added release notes which provide the end users with a brief summary of the improvement from this pull request
• I have run clang-format on all changed files
• Any dependent changes have been merged

Discussion

If this is a relatively large or complex change, feel free to start a discussion by explaining why you chose the solution you did and what alternatives you considered

[Copilot]

Pull request overview

This PR introduces the CK_USE_GFX950 macro to replace direct checks for __gfx950__ in template configurations. This change addresses a CI failure in MIOpen where GPU architecture-specific macros used in host code were causing compilation issues.

Changes:

• Added CK_USE_GFX950 macro definition in CMakeLists.txt for gfx950 targets
• Replaced __gfx950__ checks with CK_USE_GFX950 in conv forward and backward data instances
• Removed unused CK_ENABLE_TF32 macro definitions from config.h.in

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
CMakeLists.txt	Adds conditional definition of CK_USE_GFX950 macro for gfx950 GPU targets
device_grouped_conv_fwd_xdl_merged_groups_instance.hpp	Updates architecture check from __gfx950__ to CK_USE_GFX950
device_grouped_conv_bwd_data_xdl_instance.hpp	Updates architecture check from __gfx950__ to CK_USE_GFX950
config.h.in	Removes unused CK_ENABLE_TF32 macro definitions

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[Copilot]

The macro name CK_USE_GFX950 doesn't match the pattern established in CMakeLists.txt where it's defined as CK_USE_GFX95 (without the trailing '0'). This inconsistency will cause the conditional compilation to fail.

Suggested change

	#if defined(CK_USE_GFX950)
	#if defined(CK_USE_GFX95)

[Copilot]

The macro name CK_USE_GFX950 doesn't match the pattern established in CMakeLists.txt where it's defined as CK_USE_GFX95 (without the trailing '0'). This inconsistency will cause the conditional compilation to fail.

Suggested change

	#if defined(CK_USE_GFX950)
	#if defined(CK_USE_GFX95)