drm: Drop FreeBSD-specific checks of oops_in_progress

[Why]
With vt_drmfb, I believe they are not needed anymore.

drivers/gpu/drm/drm_modeset_lock.c

@@ -138,11 +138,6 @@ void drm_modeset_lock_all(struct drm_device *dev)
 	struct drm_modeset_acquire_ctx *ctx;
 	int ret;
 
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return;
-#endif
-
 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL | __GFP_NOFAIL);
 	if (WARN_ON(!ctx))
 		return;
@@ -196,11 +191,6 @@ void drm_modeset_unlock_all(struct drm_device *dev)
 	struct drm_mode_config *config = &dev->mode_config;
 	struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx;
 
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return;
-#endif
-
 	if (WARN_ON(!ctx))
 		return;
 
@@ -225,10 +215,8 @@ void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
 	struct drm_crtc *crtc;
 
 	/* Locking is currently fubar in the panic handler. */
-#ifdef __FreeBSD__
 	if (oops_in_progress)
 		return;
-#endif
 
 	drm_for_each_crtc(crtc, dev)
 		WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
@@ -250,11 +238,6 @@ EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
 void drm_modeset_acquire_init(struct drm_modeset_acquire_ctx *ctx,
 		uint32_t flags)
 {
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return;
-#endif
-
 	memset(ctx, 0, sizeof(*ctx));
 	ww_acquire_init(&ctx->ww_ctx, &crtc_ww_class);
 	INIT_LIST_HEAD(&ctx->locked);
@@ -270,11 +253,6 @@ EXPORT_SYMBOL(drm_modeset_acquire_init);
  */
 void drm_modeset_acquire_fini(struct drm_modeset_acquire_ctx *ctx)
 {
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return;
-#endif
-
 	ww_acquire_fini(&ctx->ww_ctx);
 }
 EXPORT_SYMBOL(drm_modeset_acquire_fini);
@@ -287,11 +265,6 @@ EXPORT_SYMBOL(drm_modeset_acquire_fini);
  */
 void drm_modeset_drop_locks(struct drm_modeset_acquire_ctx *ctx)
 {
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return;
-#endif
-
 	if (WARN_ON(ctx->contended))
 		__drm_stack_depot_print(ctx->stack_depot);
 
@@ -312,11 +285,6 @@ static inline int modeset_lock(struct drm_modeset_lock *lock,
 {
 	int ret;
 
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return 0;
-#endif
-
 	if (WARN_ON(ctx->contended))
 		__drm_stack_depot_print(ctx->stack_depot);
 
@@ -371,11 +339,6 @@ int drm_modeset_backoff(struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_modeset_lock *contended = ctx->contended;
 
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return 0;
-#endif
-
 	ctx->contended = NULL;
 	ctx->stack_depot = 0;
 
@@ -420,11 +383,6 @@ EXPORT_SYMBOL(drm_modeset_lock_init);
 int drm_modeset_lock(struct drm_modeset_lock *lock,
 		struct drm_modeset_acquire_ctx *ctx)
 {
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return 0;
-#endif
-
 	if (ctx)
 		return modeset_lock(lock, ctx, ctx->interruptible, false);
 
@@ -444,10 +402,6 @@ EXPORT_SYMBOL(drm_modeset_lock);
  */
 int drm_modeset_lock_single_interruptible(struct drm_modeset_lock *lock)
 {
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return 0;
-#endif
 	return ww_mutex_lock_interruptible(&lock->mutex, NULL);
 }
 EXPORT_SYMBOL(drm_modeset_lock_single_interruptible);
@@ -458,11 +412,6 @@ EXPORT_SYMBOL(drm_modeset_lock_single_interruptible);
  */
 void drm_modeset_unlock(struct drm_modeset_lock *lock)
 {
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return;
-#endif
-
 	list_del_init(&lock->head);
 	ww_mutex_unlock(&lock->mutex);
 }
@@ -496,11 +445,6 @@ int drm_modeset_lock_all_ctx(struct drm_device *dev,
 	struct drm_plane *plane;
 	int ret;
 
-#ifdef __FreeBSD__
-	if (oops_in_progress)
-		return 0;
-#endif
-
 	ret = drm_modeset_lock(&dev->mode_config.connection_mutex, ctx);
 	if (ret)
 		return ret;