nimble/ll: Set BLE_LL_FEAT_DATA_LEN_EXT as initial feature
We use it in case when Master does not initiate feature exchange.
Note: When remote does not support it, then this bit will be cleared
when handling LL_UNKNOWN_RSP.
It fixes LL/CON/SLA/BV-79-C
@@ -237,7 +237,7 @@ extern STATS_SECT_DECL(ble_ll_stats) ble_ll_stats;
* succeed, feature bit will be cleared.
* Look at LL Features above to find out what is allowed
*/
-#define BLE_LL_CONN_INITIAL_FEATURES (0x00000002)
+#define BLE_LL_CONN_INITIAL_FEATURES (0x00000022)
#define BLE_LL_CONN_CLEAR_FEATURE(connsm, feature) (connsm->conn_features &= ~(feature))
