These may be required with the new SIMD::Load and SIMD::Store implementations.

Bug b/127472316
Test: dEQP-VK.spirv_assembly.instruction.compute.opatomic.load
Test: dEQP-VK.spirv_assembly.instruction.compute.opatomic.store

Change-Id: I89db49d7c27c268d37d1bb768adfefd99c11c7c0
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29449
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>