[Intel-gfx] [STABLE 4.4 BACKPORT REQUEST] drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2)

[Jani Nikula]

Stable team, please backport

commit e2e407dc093f530b771ee8bf8fe1be41e3cea8b3
Author: Matt Roper <matthew.d.roper at intel.com>
Date:   Mon Feb 8 11:05:28 2016 -0800

    drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2)

to v4.4.

Tested-by: Jay <mymailclone at t-online.de> # v4.4


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center