net: wireless: bcmdhd: arpoe/ndoe IOVAR bug patch

fix the bug which set wrong interface index number to dongle.
that affected P2P mode which use additional BSS interface,
other than Station or AP mode.

Signed-off-by: Insun Song <insun.song@broadcom.com>
Bug: 38309523
Bug: 36000515
Change-Id: I5331811c4e6e74f27c5a2326dad94353a3e66ce1