btbb: support register retention in esp32c6

components/esp_phy/esp32c6/include/btbb_retention_reg.h

@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// btbb sleep retention reg
+
+#define BB_PART_0_SIZE 93
+#define BB_PART_1_SIZE 62
+#define BB_PART_2_SIZE 19
+#define BB_PART_0_ADDR 0x600A2000
+#define BB_PART_1_ADDR 0x600A2800
+#define BB_PART_2_ADDR 0x600A2C00
+
+#ifdef __cplusplus
+}
+#endif