moby: kernel: mark SYSFB_SIMPLEFB & co as required for boot

pkgs/additional/linux-sane-pinephonepro/default.nix

@@ -107,7 +107,7 @@ linux_latest.override {
         # NET_VENDOR_MEDIATEK = lib.mkForce no;
         # WAN = lib.mkForce no;
 
-        # TODO: can these be removed?
+        # TODO: at least one of these is actually required for boot
         SYSFB_SIMPLEFB = lib.mkForce no;
         DRM_ACCEL = lib.mkForce no;
         AUXDISPLAY = lib.mkForce no;