nimble/util: Use VS HCI command for reading static random address

Use dedicated VS command for reading static address instead of
calling controller code from host. This is required to properly
support multi-core MCUs where host and controller runs on separate
cores.

nimble/host/util/src/addr.c

@@ -19,23 +19,21 @@
 
 #include "host/ble_hs.h"
 #include "host/util/util.h"
-
-#if MYNEWT_VAL(BLE_CONTROLLER)
-#include "controller/ble_hw.h"
-#endif
+#include "../src/ble_hs_hci_priv.h"
 
 static int
 ble_hs_util_load_rand_addr(ble_addr_t *addr)
 {
-    /* XXX: It is unfortunate that the function to retrieve the random address
-     * is in the controller package.  A host-only device ought to be able to
-     * automically restore a random address.
-     */
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_HCI_VS)
+    struct ble_hci_vs_rd_static_addr_rp rsp;
     int rc;
 
-    rc = ble_hw_get_static_addr(addr);
+    rc = ble_hs_hci_cmd_tx(BLE_HCI_OP(BLE_HCI_OGF_VENDOR,
+                                      BLE_HCI_OCF_VS_RD_STATIC_ADDR),
+                           NULL, 0, &rsp, sizeof(rsp));
     if (rc == 0) {
+        addr->type = BLE_ADDR_RANDOM;
+        memcpy(addr->val, rsp.addr, sizeof(addr->val));
         return 0;
     }
 #endif