ac/llvm: fix gfx11 fs input load for 16bit varying
Otherwise we get empty output. Fixes: b07204d7 ("radeonsi/gfx11: interp changes for 16bit") Reviewed-by:Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Reviewed-by:
Marek Olšák <marek.olsak@amd.com> Signed-off-by:
Qiang Yu <yuq825@gmail.com> Part-of: <mesa/mesa!19637>