drm/i915: Dump w/a lists on all engines

static int i915_wa_registers(struct seq_file *m, void *unused)

{

	struct drm_i915_private *i915 = node_to_i915(m->private);

	const struct i915_wa_list *wal = &i915->engine[RCS0]->ctx_wa_list;

	struct i915_wa *wa;

	unsigned int i;

	struct intel_engine_cs *engine;

	enum intel_engine_id id;

	for_each_engine(engine, i915, id) {

		const struct i915_wa_list *wal = &engine->ctx_wa_list;

		const struct i915_wa *wa;

		unsigned int count;

		count = wal->count;

		if (!count)

			continue;

		seq_printf(m, "%s: Workarounds applied: %u\n",

			   engine->name, count);

	seq_printf(m, "Workarounds applied: %u\n", wal->count);

	for (i = 0, wa = wal->list; i < wal->count; i++, wa++)

		for (wa = wal->list; count--; wa++)

			seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X\n",

			   i915_mmio_reg_offset(wa->reg), wa->val, wa->mask);

				   i915_mmio_reg_offset(wa->reg),

				   wa->val, wa->mask);

		seq_printf(m, "\n");

	}

	return 0;

}