What:		/sys/devices/soc/X.ufshc/erasesize
Date:		April 2018
contact:	Jaegeuk Kim <jaegeuk@google.com>
Description:
		This file shows the size of erase operation reported by UFS.

What:		/sys/devices/soc/X.ufshc/health
Date:		September 2017
contact:	Jaegeuk Kim <jaegeuk@google.com>
Description:
		This directory contains health information reported by UFS.
		- length must be 25h
		- type must be 09h
		- eol represent
		  00h: Not defined
		  01h: Normal
		  02h: Warning
		  03h: Critical
		- lifetimeA/B
		  00h: Not defined
		  01h:  0% ~ 10% device life time used
		  02h: 10% ~ 20% device life time used
		  03h: 20% ~ 30% device life time used
		  04h: 30% ~ 40% device life time used
		  05h: 40% ~ 50% device life time used
		  06h: 50% ~ 60% device life time used
		  07h: 60% ~ 70% device life time used
		  08h: 70% ~ 80% device life time used
		  09h: 80% ~ 90% device life time used
		  0Ah: 90% ~ 100% device life time used
		  0Bh: Exceeded its maximum estimated device life time
		- erasecount
		  average erase count
		- totalwrite
		  total host data writes in 100MB