ath6kl: add board wlan_setup_power function
fix network search
remove 'detect' from power code
Revert "remove 'detect' from power code"

This reverts commit e4351622e3271e18fe18b51a790078146bdc5dd4.
Add workaround for deepsleep on Samsung msm7x27

The WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID is not
being acknowledged properly on our chipset.

Thanks to gian21391.