radv/lower_abi: Don't pre-load rings when using LLVM
The LLVM path doesn't declare the ring_offsets arg which can lead to NIR
validation failures.
Fixes: c7cedaa ("radv: implement GS load_ring_gsvs_amd/load_ring_gs2vs_offset_amd")
The LLVM path doesn't declare the ring_offsets arg which can lead to NIR
validation failures.
Fixes: c7cedaa ("radv: implement GS load_ring_gsvs_amd/load_ring_gs2vs_offset_amd")