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.
temp fix for keep-wifi-on-during-sleep
enable fw crash recovery
enable WOW

This just enables WOW and DEEP_SLEEP as fallback.
It does not use WOW irq or wakelocks since those
are handled via mmc driver.
skip WOW if no interfaces are up
Revert "bump max_power for weak signals"

This reverts commit fa148a8cb7ee5dc84abb5d128831b1cf6d1095c0.