staging: wilc1000: add ops resuem/suspend/wakeup in cfg80211

This patch adds ops resume, suspend and set_wakeup in cfg80211. Together with
previous patches, driver will support suspend/resume functionality.

Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>