nvidia_x11.fabricmanager: use fabricmanagerVersion

Looks like fabricmanagerVersion was unused since introduction.

Signed-off-by: Paul Meyer <[e-mail]>

pkgs/os-specific/linux/nvidia-x11/fabricmanager.nix

···
 let
   sys = lib.concatStringsSep "-" (lib.reverseList (lib.splitString "-" stdenv.system));
   bsys = builtins.replaceStrings [ "_" ] [ "-" ] sys;
-  fmver = nvidia_x11.version;
+  fmver = nvidia_x11.fabricmanagerVersion;
   ldd = (lib.getBin glibc) + "/bin/ldd";
 in
 

pkgs/os-specific/linux/nvidia-x11/generic.nix

···
   persistencedSha256 ? null,
   persistencedVersion ? null,
   fabricmanagerSha256 ? null,
-  fabricmanagerVersion ? version,
+  fabricmanagerVersion ? null,
   useGLVND ? true,
   useProfiles ? true,
   preferGtk2 ? false,
···
       settingsVersion = if settingsVersion != null then settingsVersion else finalAttrs.version;
       persistencedVersion =
         if persistencedVersion != null then persistencedVersion else finalAttrs.version;
+      fabricmanagerVersion =
+        if fabricmanagerVersion != null then fabricmanagerVersion else finalAttrs.version;
       compressFirmware = false;
       ibtSupport = ibtSupport || (lib.versionAtLeast version "530");
     }