[AMDGPU] Fix linker test on platforms without BFD

Author: jhuber6

clang/test/Driver/amdgpu-toolchain.c

@@ -25,8 +25,6 @@
 // LTO: clang{{.*}} "-flto=full"{{.*}}"-fconvergent-functions"
 // MCPU: ld.lld{{.*}}"-L."{{.*}}"-plugin-opt=mcpu=gfx906"
 
-// We do not suppor the BFD linker, but we should be able to override the
-// default even if it will error during linking.
 // RUN: %clang -### --target=amdgcn-amd-amdhsa -mcpu=gfx906 -nogpulib \
-// RUN:   -fuse-ld=bfd %s 2>&1 | FileCheck -check-prefixes=LD %s
-// LD: ld.bfd"
+// RUN:   -fuse-ld=ld %s 2>&1 | FileCheck -check-prefixes=LD %s
+// LD: ld.lld"