nimble/ll: Add CS Configuration procedure

Implements:
- LE CS Create Config command
- LE CS Remove Config command

Author: mkasenberg

nimble/controller/include/controller/ble_ll_conn.h

@@ -278,7 +278,7 @@ struct ble_ll_conn_sm
     uint8_t vers_nr;
     uint8_t conn_features;
     uint8_t remote_features[7];
-    uint16_t pending_ctrl_procs;
+    uint32_t pending_ctrl_procs;
     uint16_t event_cntr;
     uint16_t completed_pkts;
     uint16_t comp_id;

nimble/controller/include/controller/ble_ll_cs.h

@@ -32,13 +32,17 @@ void ble_ll_cs_init(void);
 void ble_ll_cs_reset(void);
 
 void ble_ll_cs_capabilities_pdu_make(struct ble_ll_conn_sm *connsm, uint8_t *dptr);
+void ble_ll_cs_config_req_make(struct ble_ll_conn_sm *connsm, uint8_t *dptr);
 
 int ble_ll_cs_rx_capabilities_req(struct ble_ll_conn_sm *connsm, uint8_t *dptr, uint8_t *rspbuf);
 void ble_ll_cs_rx_capabilities_rsp(struct ble_ll_conn_sm *connsm, uint8_t *dptr);
 void ble_ll_cs_rx_capabilities_req_rejected(struct ble_ll_conn_sm *connsm, uint8_t ble_error);
 int ble_ll_cs_rx_fae_req(struct ble_ll_conn_sm *connsm, struct os_mbuf *om);
 void ble_ll_cs_rx_fae_rsp(struct ble_ll_conn_sm *connsm, uint8_t *dptr);
 void ble_ll_cs_rx_fae_req_rejected(struct ble_ll_conn_sm *connsm, uint8_t ble_error);
+int ble_ll_cs_rx_config_req(struct ble_ll_conn_sm *connsm, uint8_t *dptr, uint8_t *rspbuf);
+void ble_ll_cs_rx_config_rsp(struct ble_ll_conn_sm *connsm, uint8_t *dptr);
+void ble_ll_cs_rx_config_req_rejected(struct ble_ll_conn_sm *connsm, uint8_t ble_error);
 
 /* HCI handlers */
 int ble_ll_cs_hci_rd_loc_supp_cap(uint8_t *rspbuf, uint8_t *rsplen);

nimble/controller/include/controller/ble_ll_ctrl.h

@@ -45,7 +45,8 @@ extern "C" {
 #define BLE_LL_CTRL_PROC_SUBRATE_UPDATE (13)
 #define BLE_LL_CTRL_PROC_CS_CAP_XCHG    (14)
 #define BLE_LL_CTRL_PROC_CS_FAE_REQ     (15)
-#define BLE_LL_CTRL_PROC_NUM            (16)
+#define BLE_LL_CTRL_PROC_CS_CONF        (16)
+#define BLE_LL_CTRL_PROC_NUM            (17)
 #define BLE_LL_CTRL_PROC_IDLE           (255)
 
 /* Checks if a particular control procedure is running */