tests: adjust expectation for f128 abi on Windows

llvm/llvm-project@5ee1c0b updates llvm
to match the documented calling convention to pass f128 indirectly.

@rustbot label llvm-main

Author: durin42

tests/assembly/x86_64-windows-float-abi.rs

@@ -37,7 +37,7 @@ pub extern "C" fn second_f64(_: f64, x: f64) -> f64 {
 }
 
 // CHECK-LABEL: second_f128
-// CHECK: movaps %xmm1, %xmm0
+// CHECK: movaps {{(%xmm1|\(%rdx\))}}, %xmm0
 // CHECK-NEXT: retq
 #[no_mangle]
 pub extern "C" fn second_f128(_: f128, x: f128) -> f128 {