Reverting a change introduced in 6de7e7f8b3698 "[drm] upstream sync to v4.10"
(upstream c470abd4fde40ea).
Index: src/drivers/gpu/drm/mgag200/mgag200_drv.c
===================================================================
--- src.orig/drivers/gpu/drm/mgag200/mgag200_drv.c	2017-06-09 15:24:20.259565585 +0200
+++ src/drivers/gpu/drm/mgag200/mgag200_drv.c	2017-06-09 15:24:53.266191785 +0200
@@ -60,7 +60,7 @@
 #ifdef CONFIG_X86
 	primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 #endif
-	drm_fb_helper_remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
+	remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
 	kfree(ap);
 }
 
Index: src/drivers/gpu/drm/mgag200/mgag200_main.c
===================================================================
--- src.orig/drivers/gpu/drm/mgag200/mgag200_main.c	2017-06-09 15:24:53.230192192 +0200
+++ src/drivers/gpu/drm/mgag200/mgag200_main.c	2017-06-09 15:25:49.516554749 +0200
@@ -137,7 +137,7 @@
 	aper->ranges[0].base = mdev->mc.vram_base;
 	aper->ranges[0].size = mdev->mc.vram_window;
 
-	drm_fb_helper_remove_conflicting_framebuffers(aper, "mgafb", true);
+	remove_conflicting_framebuffers(aper, "mgafb", true);
 	kfree(aper);
 
 	if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window,