wificond: allow ioctls for create/remove/read bridge interface.

This allows additional IOCTLs such as create/remove or reading
mac address of bridge interface. IOCTLs are:
SIOCBRADDBR: Create bridge interface.
SIOCBRDELBR: Remove bridge interface.
SIOCGIFHWADDR: Read mac address of interface.

CRs-Fixed: 2080928
Change-Id: Ia0c97d736f2df95be8f49e8580a4d4ba22ce42ed
1 file changed