[llvm] [AMDGPU][GlobalISel] Add RegBankLegalize support for ASSERT ops (PR #161296)

[Chinmay Deshpande via llvm-commits]

chinmaydd wrote:

Raised https://github.com/llvm/llvm-project/pull/162728 to unblock other ops. Support for G_ASSERT_ALIGN will be added later.

https://github.com/llvm/llvm-project/pull/161296