drm: Add acquire ctx parameter to ->set_config

Surprisingly a lot of legacy drivers roll their own, for
runtime pm and because vmwgfx.

Also make nouveau's set_config static while at it.

Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-19-daniel.vetter@ffwll.ch

drivers/gpu/drm/nouveau/dispnv04/crtc.c

@@ -1031,8 +1031,9 @@ nv04_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
 	return 0;
 }
 
-int
-nouveau_crtc_set_config(struct drm_mode_set *set)
+static int
+nouveau_crtc_set_config(struct drm_mode_set *set,
+			struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev;
 	struct nouveau_drm *drm;
@@ -1049,7 +1050,7 @@ nouveau_crtc_set_config(struct drm_mode_set *set)
 	if (ret < 0 && ret != -EACCES)
 		return ret;
 
-	ret = drm_crtc_helper_set_config(set);
+	ret = drm_crtc_helper_set_config(set, ctx);
 
 	drm = nouveau_drm(dev);