Revert "bln: move wakelock inteface to /sys/kernel/bln"

This reverts commit f9e1eab06090a85f2b3e144865a7d053e7111606.
Revert "bln: fix derps"

This reverts commit 781497816f3b76952b5e1122e234868676211cf4.
Revert "bln: enable bln_blink_state by default"

This reverts commit afd662332f162325e075876bfc8c0cbaf2c23376.