nimble/ll/css: Add vs event to indicate slot change

[andrzej-kaczmarek]

If hci_vs support is enabled for CSS, an event will be sent every time slot chanes for a connection. Event is also sent after connection is created (after conn complete and csa events).

[apache-mynewt-bot]

Style check summary

Our coding style is here!

nimble/controller/src/ble_ll_hci_vs.c

@@ -270,7 +270,7 @@
 
 static int
 ble_ll_hci_vs_css_read_conn_slot(const uint8_t *cmdbuf, uint8_t cmdlen,
-                                uint8_t *rspbuf, uint8_t *rsplen)
+                                 uint8_t *rspbuf, uint8_t *rsplen)
 {
     const struct ble_hci_vs_css_read_conn_slot_cp *cmd = (const void *)cmdbuf;
     struct ble_hci_vs_css_read_conn_slot_rp *rsp = (void *)rspbuf;

[andrzej-kaczmarek]

added in https://github.com/apache/mynewt-nimble/pull/1334