[SRU Zesty][Power8] Fix Fix HMI exception on LE with CONFIG_RELOCATABLE=y

[Manoj Iyer]

Please review and consider this patch for Zesty, this patch was cleanly
cherry-picked from linus's tree and a test kernel is available here:
https://launchpad.net/~ubuntu-power-triage/+archive/ubuntu/test/
The patch was tested by IBM and the test details are posted to the bug:
https://launchpad.net/bugs/1684054