Revert "drm/nouveau: Run DRM default client setup"

This reverts commit 7fc4fd8bf5 which is
commit ef350898ae22db832ada972476fa2999f8ea978c upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I378259a47f1b538d10e843dbd5d7a57d8b9dc9c8
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/gpu/drm/nouveau/Kconfig

@@ -4,7 +4,6 @@ config DRM_NOUVEAU
 	depends on DRM && PCI && MMU
 	select IOMMU_API
 	select FW_LOADER
-	select DRM_CLIENT_SELECTION
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HELPER

drivers/gpu/drm/nouveau/nouveau_drm.c

@@ -31,7 +31,6 @@
 #include <linux/dynamic_debug.h>
 
 #include <drm/drm_aperture.h>
-#include <drm/drm_client_setup.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_ttm.h>
 #include <drm/drm_gem_ttm_helper.h>
@@ -837,7 +836,6 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
 {
 	struct nvkm_device *device;
 	struct nouveau_drm *drm;
-	const struct drm_format_info *format;
 	int ret;
 
 	if (vga_switcheroo_client_probe_defer(pdev))
@@ -875,11 +873,9 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
 		goto fail_pci;
 
 	if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
-		format = drm_format_info(DRM_FORMAT_C8);
+		drm_fbdev_ttm_setup(drm->dev, 8);
 	else
-		format = NULL;
-
-	drm_client_setup(drm->dev, format);
+		drm_fbdev_ttm_setup(drm->dev, 32);
 
 	quirk_broken_nv_runpm(pdev);
 	return 0;
@@ -1322,8 +1318,6 @@ driver_stub = {
 	.dumb_create = nouveau_display_dumb_create,
 	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
 
-	DRM_FBDEV_TTM_DRIVER_OPS,
-
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
 #ifdef GIT_REVISION