nimble: Add experimental tag for BIGInfo syscfgs

This adds "experimental" tag for BIGInfo sycfgs and changes the
name of host's syscfg to describe it better.

nimble/controller/syscfg.yml

@@ -367,7 +367,8 @@ syscfg.defs:
         description: >
             This option is used to enable/disable support for
             handling BIGInfo data
-        value: MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+        value: MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
+        experimental: 1
 
     BLE_LL_SCAN_AUX_SEGMENT_CNT:
          description: >

nimble/host/include/host/ble_gap.h

@@ -983,7 +983,7 @@ struct ble_gap_event {
         } periodic_transfer;
 #endif
 
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
         /**
          * Represents a periodic advertising sync transfer received. Valid for
          * the following event types:

nimble/host/src/ble_gap.c

@@ -1853,7 +1853,7 @@ ble_gap_rx_periodic_adv_sync_transfer(const struct ble_hci_ev_le_subev_periodic_
 }
 #endif
 
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
 void
 ble_gap_rx_biginfo_adv_rpt(const struct ble_hci_ev_le_subev_biginfo_adv_report *ev)
 {

nimble/host/src/ble_gap_priv.h

@@ -88,7 +88,7 @@ void ble_gap_rx_periodic_adv_rpt(const struct ble_hci_ev_le_subev_periodic_adv_r
 void ble_gap_rx_periodic_adv_sync_lost(const struct ble_hci_ev_le_subev_periodic_adv_sync_lost *ev);
 void ble_gap_rx_periodic_adv_sync_transfer(const struct ble_hci_ev_le_subev_periodic_adv_sync_transfer *ev);
 #endif
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
 void ble_gap_rx_biginfo_adv_rpt(const struct ble_hci_ev_le_subev_biginfo_adv_report *ev);
 #endif
 void ble_gap_rx_scan_req_rcvd(const struct ble_hci_ev_le_subev_scan_req_rcvd *ev);

nimble/host/src/ble_hs_hci_evt.c

@@ -63,7 +63,7 @@ static ble_hs_hci_evt_le_fn ble_hs_hci_evt_le_periodic_adv_rpt;
 static ble_hs_hci_evt_le_fn ble_hs_hci_evt_le_periodic_adv_sync_lost;
 static ble_hs_hci_evt_le_fn ble_hs_hci_evt_le_scan_req_rcvd;
 static ble_hs_hci_evt_le_fn ble_hs_hci_evt_le_periodic_adv_sync_transfer;
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
 static ble_hs_hci_evt_le_fn ble_hs_hci_evt_le_biginfo_adv_report;
 #endif
 #if MYNEWT_VAL(BLE_POWER_CONTROL)
@@ -131,7 +131,7 @@ static ble_hs_hci_evt_le_fn * const ble_hs_hci_evt_le_dispatch[] = {
     [BLE_HCI_LE_SUBEV_ADV_SET_TERMINATED] = ble_hs_hci_evt_le_adv_set_terminated,
     [BLE_HCI_LE_SUBEV_SCAN_REQ_RCVD] = ble_hs_hci_evt_le_scan_req_rcvd,
     [BLE_HCI_LE_SUBEV_PERIODIC_ADV_SYNC_TRANSFER] = ble_hs_hci_evt_le_periodic_adv_sync_transfer,
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
     [BLE_HCI_LE_SUBEV_BIGINFO_ADV_REPORT] = ble_hs_hci_evt_le_biginfo_adv_report,
 #endif
 #if MYNEWT_VAL(BLE_POWER_CONTROL)
@@ -729,7 +729,7 @@ ble_hs_hci_evt_le_periodic_adv_sync_transfer(uint8_t subevent, const void *data,
     return 0;
 }
 
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
 static int
 ble_hs_hci_evt_le_biginfo_adv_report(uint8_t subevent, const void *data,
                                      unsigned int len)

nimble/host/src/ble_hs_startup.c

@@ -261,7 +261,7 @@ ble_hs_startup_le_set_evmask_tx(void)
     }
 #endif
 
-#if MYNEWT_VAL(BLE_BIGINFO_REPORTS)
+#if MYNEWT_VAL(BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS)
     if (version >= BLE_HCI_VER_BCS_5_2) {
         /**
          * Enable the following LE events:

nimble/syscfg.yml

@@ -68,13 +68,14 @@ syscfg.defs:
         restrictions:
             - 'BLE_PERIODIC_ADV if 1'
             - '(BLE_ROLE_CENTRAL || BLE_ROLE_PERIPHERAL) if 1'
-    BLE_BIGINFO_REPORTS:
+    BLE_PERIODIC_ADV_SYNC_BIGINFO_REPORTS:
         description: >
             This enables BIGInfo reports.
         value: 0
         restrictions:
             - 'BLE_PERIODIC_ADV if 1'
             - '(BLE_VERSION >= 52) if 1'
+        experimental: 1
     BLE_EXT_ADV_MAX_SIZE:
         description: >
             This allows to configure maximum size of advertising data and