radeonsi: add context shader state for mesh shader

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37505>

src/gallium/drivers/radeonsi/si_gfx_cs.c

@@ -524,6 +524,7 @@ void si_begin_new_gfx_cs(struct si_context *ctx, bool first_cs)
    si_add_all_descriptors_to_bo_list(ctx);
    si_shader_pointers_mark_dirty(ctx);
    ctx->cs_shader_state.emitted_program = NULL;
+   ctx->ts_shader_state.emitted_program = NULL;
 
    /* The CS initialization should be emitted before everything else. */
    if (ctx->cs_preamble_state) {

src/gallium/drivers/radeonsi/si_pipe.h

@@ -1094,6 +1094,8 @@ struct si_context {
       struct si_shader_ctx_state shaders[SI_NUM_GRAPHICS_SHADERS];
    };
    struct si_cs_shader_state cs_shader_state;
+   struct si_cs_shader_state ts_shader_state;
+   struct si_shader_ctx_state ms_shader_state;
    bool compute_ping_pong_launch;
    /* if current tcs set by user */
    bool is_user_tcs;