[llvm] AMDGPU: Add gfx1250 to sram-ecc elf header flags test (PR #162107)

[Shilei Tian via llvm-commits]

https://github.com/shiltian approved this pull request.

Yeah that's right. I do find it in `llvm/lib/Target/AMDGPU/AMDGPU.td`.

https://github.com/llvm/llvm-project/pull/162107