Linux I2C slave eeprom backend
  ==============================
  
  by Wolfram Sang <wsa@sang-engineering.com> in 2014-15
  
  This is a proof-of-concept backend which acts like an EEPROM on the connected
  I2C bus. The memory contents can be modified from userspace via this file
  located in sysfs:
  
  	/sys/bus/i2c/devices/<device-direcory>/slave-eeprom
  
  As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
  notfication when another master changed the content.