radv/amdgpu: Add a few assertions during submit.

These are useful when debugging the submission code.

- Ensure correct IB alignment
- Ensure we don't submit empty IBs

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22354>

src/amd/vulkan/winsys/amdgpu/radv_amdgpu_cs.c

@@ -1773,6 +1773,8 @@ radv_amdgpu_cs_submit(struct radv_amdgpu_ctx *ctx, struct radv_amdgpu_cs_request
       chunks[i].chunk_data = (uint64_t)(uintptr_t)&chunk_data[i];
 
       ib = &request->ibs[i];
+      assert(ib->ib_mc_address && ib->ib_mc_address % ctx->ws->info.ib_alignment == 0);
+      assert(ib->size);
 
       chunk_data[i].ib_data._pad = 0;
       chunk_data[i].ib_data.va_start = ib->ib_mc_address;