v3d: use GS_BIN inputs as VS_BIN outputs

When creating the Vextex Shader bin, only store outputs that will be
read later as inputs by the Geometry Shader bin.

This fixes
KHR-GLES31.core.geometry_shader.rendering.rendering.lines_input_triangle_strip_output_line_loop_drawcall
(exposed by previous commit).

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10129>

src/gallium/drivers/v3d/v3d_program.c

@@ -802,6 +802,12 @@ v3d_update_compiled_vs(struct v3d_context *v3d, uint8_t prim_mode)
                                0, tail_bytes);
                 }
                 key->num_used_outputs = shader_state->num_tf_outputs;
+        } else {
+                key->num_used_outputs = v3d->prog.gs_bin->prog_data.gs->num_inputs;
+                STATIC_ASSERT(sizeof(key->used_outputs) ==
+                              sizeof(v3d->prog.gs_bin->prog_data.gs->input_slots));
+                memcpy(key->used_outputs, v3d->prog.gs_bin->prog_data.gs->input_slots,
+                       sizeof(key->used_outputs));
         }
 
         struct v3d_compiled_shader *cs =