xserver: Allow to add extra options to xorg config.
xserver: Allow to add extra options to xorg config.

This is especially useful if you want to supply a default XRandR configuration,
where you need multiple "Monitor" sections in order to set properties for
specific CRTCs (if not running in zaphod mode).

Signed-off-by: aszlig <ee1aa092358634f9c53f01b5a783726c9e21b35a@redmoonstudios.org>

triton/triton,triton/triton,andreassalomonsson/nixos,triton/triton,SymbiFlow/nixpkgs,triton/triton,andreassalomonsson/nixos,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,NixOS/nixpkgs,triton/triton,andreassalomonsson/nixos,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,NixOS/nixos,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,andreassalomonsson/nixos,SymbiFlow/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixos,NixOS/nixos,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,andreassalomonsson/nixos,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,andreassalomonsson/nixos