fix: use nixos-uconsole.kernel module only (uconsole-cm5 has broken deps)

- uconsole-cm5 module requires hardware.raspberry-pi options that don't exist
- Manual hardware config in flake.nix instead
- Still uses uconsole kernel and nixpkgs-uconsole for package compatibility

hosts/uconsole/configuration.nix

@@ -2,20 +2,8 @@
 
 {
   # --- CORE HARDWARE (CM5 / RPi5) ---
-  # nixos-uconsole.nixosModules.uconsole-cm5 imported in flake.nix
-
-  uconsole = {
-    enable = true;
-    variant = "cm5"; # Hardware target: CM5/RPi5
-    # Fixes the landscape orientation at boot
-    videoMode = "720x1280M@60D,panel_orientation=right_side_up";
-  };
-
-  # Firmware for Wi-Fi and Bluetooth
-  hardware.enableRedistributableFirmware = true;
-  
-  # Enable GPU acceleration (VideoCore VII)
-  hardware.graphics.enable = true;
+  # Manual config in flake.nix (nixos-uconsole.nixosModules.kernel provides CM5 kernel)
+  # nixos-uconsole.nixosModules.uconsole-cm5 has broken hardware.raspberry-pi dependencies
 
   # --- BASIC HOST INFO ---
   networking.hostName = "uConsole";