[llvm] [lld] [AMDGPU][NFC] Improve testing for AMDHSA ABI Version (PR #74300)

[Saiyedul Islam via llvm-commits]

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@@ -1,10 +1,16 @@
 # REQUIRES: amdgpu
 
-# RUN: llvm-mc -filetype=obj -triple=amdgcn-amd-amdhsa %s -o %t.o
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saiislam wrote:

I am replacing the default testing with explicit testing of cov4 and cov5 to reduce the churn in the patch to make cov5 default.

https://github.com/llvm/llvm-project/pull/74300