XFAIL for QuadReadAcrossY.fp64.test on WARP D3D12 DXC config (#1014)

WARP D3D12 DXC tests are failing for QuadReadAcrossY.fp64.test. I filed
an issue for it, opening a PR for add XFAIL to the test.

---------

Co-authored-by: Finn Plummer <mail@inbelic.dev>

Author: kcloudy0717

test/WaveOps/QuadReadAcrossY.fp64.test

@@ -128,6 +128,9 @@ DescriptorSets:
 # Bug: https://github.com/llvm/offload-test-suite/issues/986
 # XFAIL: Intel && Vulkan && DXC
 
+# Bug: https://github.com/llvm/offload-test-suite/issues/1013
+# XFAIL: WARP && AMD
+
 # RUN: split-file %s %t
 # RUN: %dxc_target -T cs_6_0 -Fo %t.o %t/source.hlsl
 # RUN: %offloader %t/pipeline.yaml %t.o