wil6210: add ioctl interface

Wireless drivers should not be using ioctl interface,
hence it was removed in upstream code.
Add ioctl support as internal patch.

Change-Id: Idd374f80540c0f17cff10d3c8cc85bcdd66253c4
Signed-off-by: Maya Erez <merez@codeaurora.org>
CRs-Fixed: 2143032
Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>