intel: shorten shader stage names

Use tcs, tes, and cs for tess control, tess eval, and compute.
diff --git a/icd/intel/cmd_pipeline.c b/icd/intel/cmd_pipeline.c
index d8977ed..c279cf9 100644
--- a/icd/intel/cmd_pipeline.c
+++ b/icd/intel/cmd_pipeline.c
@@ -1709,10 +1709,10 @@
         emit_shader(cmd, &pipeline->fs, &cmd->bind.fs);
     }
     if (pipeline->active_shaders & SHADER_TESS_CONTROL_FLAG) {
-        emit_shader(cmd, &pipeline->tess_control, &cmd->bind.tess_control);
+        emit_shader(cmd, &pipeline->tcs, &cmd->bind.tcs);
     }
     if (pipeline->active_shaders & SHADER_TESS_EVAL_FLAG) {
-        emit_shader(cmd, &pipeline->tess_eval, &cmd->bind.tess_eval);
+        emit_shader(cmd, &pipeline->tes, &cmd->bind.tes);
     }
 
     if (cmd_gen(cmd) >= INTEL_GEN(7)) {