[Clang] `clang-linker-wrapper` does not forward `-fpass-plugin` to the LTO invocation

[jhuber6]

Recent patches moved the LTO portion of the offloading compilation into the actual linker invocation. This means we aren't forwarding linker options to it correctly.

[aemerson]

What's the commit that introduced this failure? Normally we should revert changes that break tests instead of just XFAILing the test.

[jhuber6]

What's the commit that introduced this failure? Normally we should revert changes that break tests instead of just XFAILing the test.

it was a change to how linking is done for offloading. I'm going to fix this tomorrow morning but didn't have the time, the users of this feature haven't upstreamed anything that relies on it so I figured it was fine. It's a simple patch to just forward some options.