lenovo/thinkpad/t440p: force load thinkpad_acpi

thinkpad_acpi doesn't load automatically on corebooted Lenovo ThinkPads T440p (but works fine if force_loaded). Doesn't affect users with stock firmware.

lenovo/thinkpad/t440p/default.nix

@@ -9,6 +9,7 @@
   boot = {
     extraModprobeConfig = lib.mkDefault ''
       options bbswitch use_acpi_to_detect_card_state=1
+      options thinkpad_acpi force_load=1 fan_control=1
     '';
     # TODO: probably enable tcsd? Is this line necessary?
     kernelModules = [ "tpm-rng" ];