Bluetooth: Host: shell: Use bt_hci_cmd_alloc()

Use bt_hci_cmd_alloc() instead of the soon to be deprecated
bt_hci_cmd_create().

Signed-off-by: Johan Hedberg <johan.hedberg@silabs.com>

subsys/bluetooth/host/shell/bt.c

@@ -1432,7 +1432,7 @@ static int cmd_hci_cmd(const struct shell *sh, size_t argc, char *argv[])
 			return -ENOEXEC;
 		}
 
-		buf = bt_hci_cmd_create(BT_OP(ogf, ocf), len);
+		buf = bt_hci_cmd_alloc(K_FOREVER);
 		if (buf == NULL) {
 			shell_error(sh, "Unable to allocate HCI buffer");
 			return -ENOMEM;