drm fixes for 5.18-rc7 (part two) fbdev: - revert NULL deref fix that turned into a use-after-free - prevent use-after-free in fbdev - efifb/simplefb/vesafb: fix cleanup paths to avoid use-after-frees dma-buf: - fix panic in stats setup vc4: - fix hdmi build nouveau: - tegra iommu present fix - fix leak in backlight name vmwgfx: - Black screen due to fences using FIFO checks on SVGA3 - Random black screens on boot due to uninitialized drm_mode_fb_cmd2 - Hangs on SVGA3 due to command buffers being used with gbobjects