Changes

src/bankd/bankd_main: fix error on debian 13 i386

Fix for:

  bankd_main.c:824:46: error: passing argument 5 of 'worker->ops->transceive' from incompatible pointer type [-Wincompatible-pointer-types]
    824 |                                      rx_buf, &rx_buf_len);
        |                                              ^~~~~~~~~~~
        |                                              |
        |                                              DWORD * {aka long unsigned int *}
  bankd_main.c:824:46: note: expected 'size_t *' {aka 'unsigned int *'} but argument is of type 'DWORD *' {aka 'long unsigned int *'}

Related: OS#6828
Change-Id: I9f943a3448da5f23ea75c116559cf0b6ba6b23c7