Add i915_gem.h compatibility header and include it in i915_drv.h. Add
empty GEM_BUG_ON definition for fbc code.
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>