BugLink: http://bugs.launchpad.net/bugs/1546572

This conflicts with the tonga_smumgr.h from powerplay
in DKMS environement
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jordan Lazare <Jordan.Lazare@amd.com>
(cherry picked from commit dbd29f0d)
Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>