feat(ppa): add sleep retention support for DMA2D and PPA

components/esp_hal_ppa/include/hal/ppa_periph.h

@@ -0,0 +1,33 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+#include "soc/soc_caps.h"
+#if SOC_HAS(PAU)
+#include "soc/regdma.h"
+#include "soc/retention_periph_defs.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if SOC_HAS(PPA)
+#if SOC_LIGHT_SLEEP_SUPPORTED
+typedef struct {
+    const periph_retention_module_t module;
+    const regdma_entries_config_t *regdma_entry_array;
+    uint32_t array_size;
+} ppa_reg_retention_info_t;
+
+extern const ppa_reg_retention_info_t ppa_reg_retention_info;
+#endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif